31688280

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1$

素因数の和:131

約数の個数: 256

約数和(自身を含む): 118742400

約数和(自身を除く): 87054120

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 24, 26, 27, 30, 36, 37, 39, 40, 45, 52, 54, 60, 61, 65, 72, 74, 78, 90, 104, 108, 111, 117, 120, 122, 130, 135, 148, 156, 180, 183, 185, 195, 216, 222, 234, 244, 260, 270, 296, 305, 312, 333, 351, 360, 366, 370, 390, 444, 468, 481, 488, 520, 540, 549, 555, 585, 610, 666, 702, 732, 740, 780, 793, 888, 915, 936, 962, 999, 1080, 1098, 1110, 1170, 1220, 1332, 1404, 1443, 1464, 1480, 1560, 1586, 1647, 1665, 1755, 1830, 1924, 1998, 2196, 2220, 2257, 2340, 2379, 2405, 2440, 2664, 2745, 2808, 2886, 3172, 3294, 3330, 3510, 3660, 3848, 3965, 3996, 4329, 4392, 4440, 4514, 4680, 4758, 4810, 4995, 5490, 5772, 6344, 6588, 6660, 6771, 7020, 7137, 7215, 7320, 7930, 7992, 8235, 8658, 9028, 9516, 9620, 9990, 10980, 11285, 11544, 11895, 12987, 13176, 13320, 13542, 14040, 14274, 14430, 15860, 16470, 17316, 18056, 19032, 19240, 19980, 20313, 21411, 21645, 21960, 22570, 23790, 25974, 27084, 28548, 28860, 29341, 31720, 32940, 33855, 34632, 35685, 39960, 40626, 42822, 43290, 45140, 47580, 51948, 54168, 57096, 57720, 58682, 60939, 64935, 65880, 67710, 71370, 81252, 85644, 86580, 88023, 90280, 95160, 101565, 103896, 107055, 117364, 121878, 129870, 135420, 142740, 146705, 162504, 171288, 173160, 176046, 203130, 214110, 234728, 243756, 259740, 264069, 270840, 285480, 293410, 304695, 352092, 406260, 428220, 440115, 487512, 519480, 528138, 586820, 609390, 704184, 792207, 812520, 856440, 880230, 1056276, 1173640, 1218780, 1320345, 1584414, 1760460, 2112552, 2437560, 2640690, 3168828, 3520920, 3961035, 5281380, 6337656, 7922070, 10562760, 15844140, 31688280]

約数ペア:

[(1, 31688280), (2, 15844140), (3, 10562760), (4, 7922070), (5, 6337656), (6, 5281380), (8, 3961035), (9, 3520920), (10, 3168828), (12, 2640690), (13, 2437560), (15, 2112552), (18, 1760460), (20, 1584414), (24, 1320345), (26, 1218780), (27, 1173640), (30, 1056276), (36, 880230), (37, 856440), (39, 812520), (40, 792207), (45, 704184), (52, 609390), (54, 586820), (60, 528138), (61, 519480), (65, 487512), (72, 440115), (74, 428220), (78, 406260), (90, 352092), (104, 304695), (108, 293410), (111, 285480), (117, 270840), (120, 264069), (122, 259740), (130, 243756), (135, 234728), (148, 214110), (156, 203130), (180, 176046), (183, 173160), (185, 171288), (195, 162504), (216, 146705), (222, 142740), (234, 135420), (244, 129870), (260, 121878), (270, 117364), (296, 107055), (305, 103896), (312, 101565), (333, 95160), (351, 90280), (360, 88023), (366, 86580), (370, 85644), (390, 81252), (444, 71370), (468, 67710), (481, 65880), (488, 64935), (520, 60939), (540, 58682), (549, 57720), (555, 57096), (585, 54168), (610, 51948), (666, 47580), (702, 45140), (732, 43290), (740, 42822), (780, 40626), (793, 39960), (888, 35685), (915, 34632), (936, 33855), (962, 32940), (999, 31720), (1080, 29341), (1098, 28860), (1110, 28548), (1170, 27084), (1220, 25974), (1332, 23790), (1404, 22570), (1443, 21960), (1464, 21645), (1480, 21411), (1560, 20313), (1586, 19980), (1647, 19240), (1665, 19032), (1755, 18056), (1830, 17316), (1924, 16470), (1998, 15860), (2196, 14430), (2220, 14274), (2257, 14040), (2340, 13542), (2379, 13320), (2405, 13176), (2440, 12987), (2664, 11895), (2745, 11544), (2808, 11285), (2886, 10980), (3172, 9990), (3294, 9620), (3330, 9516), (3510, 9028), (3660, 8658), (3848, 8235), (3965, 7992), (3996, 7930), (4329, 7320), (4392, 7215), (4440, 7137), (4514, 7020), (4680, 6771), (4758, 6660), (4810, 6588), (4995, 6344), (5490, 5772)]