20173920

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1$

素因数の和:145

約数の個数: 192

約数和(自身を含む): 70870464

約数和(自身を除く): 50696544

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 32, 39, 40, 48, 52, 53, 60, 61, 65, 78, 80, 96, 104, 106, 120, 122, 130, 156, 159, 160, 183, 195, 208, 212, 240, 244, 260, 265, 305, 312, 318, 366, 390, 416, 424, 480, 488, 520, 530, 610, 624, 636, 689, 732, 780, 793, 795, 848, 915, 976, 1040, 1060, 1220, 1248, 1272, 1378, 1464, 1560, 1586, 1590, 1696, 1830, 1952, 2067, 2080, 2120, 2379, 2440, 2544, 2756, 2928, 3120, 3172, 3180, 3233, 3445, 3660, 3965, 4134, 4240, 4758, 4880, 5088, 5512, 5856, 6240, 6344, 6360, 6466, 6890, 7320, 7930, 8268, 8480, 9516, 9699, 9760, 10335, 11024, 11895, 12688, 12720, 12932, 13780, 14640, 15860, 16165, 16536, 19032, 19398, 20670, 22048, 23790, 25376, 25440, 25864, 27560, 29280, 31720, 32330, 33072, 38064, 38796, 41340, 42029, 47580, 48495, 51728, 55120, 63440, 64660, 66144, 76128, 77592, 82680, 84058, 95160, 96990, 103456, 110240, 126087, 126880, 129320, 155184, 165360, 168116, 190320, 193980, 210145, 252174, 258640, 310368, 330720, 336232, 380640, 387960, 420290, 504348, 517280, 630435, 672464, 775920, 840580, 1008696, 1260870, 1344928, 1551840, 1681160, 2017392, 2521740, 3362320, 4034784, 5043480, 6724640, 10086960, 20173920]

約数ペア:

[(1, 20173920), (2, 10086960), (3, 6724640), (4, 5043480), (5, 4034784), (6, 3362320), (8, 2521740), (10, 2017392), (12, 1681160), (13, 1551840), (15, 1344928), (16, 1260870), (20, 1008696), (24, 840580), (26, 775920), (30, 672464), (32, 630435), (39, 517280), (40, 504348), (48, 420290), (52, 387960), (53, 380640), (60, 336232), (61, 330720), (65, 310368), (78, 258640), (80, 252174), (96, 210145), (104, 193980), (106, 190320), (120, 168116), (122, 165360), (130, 155184), (156, 129320), (159, 126880), (160, 126087), (183, 110240), (195, 103456), (208, 96990), (212, 95160), (240, 84058), (244, 82680), (260, 77592), (265, 76128), (305, 66144), (312, 64660), (318, 63440), (366, 55120), (390, 51728), (416, 48495), (424, 47580), (480, 42029), (488, 41340), (520, 38796), (530, 38064), (610, 33072), (624, 32330), (636, 31720), (689, 29280), (732, 27560), (780, 25864), (793, 25440), (795, 25376), (848, 23790), (915, 22048), (976, 20670), (1040, 19398), (1060, 19032), (1220, 16536), (1248, 16165), (1272, 15860), (1378, 14640), (1464, 13780), (1560, 12932), (1586, 12720), (1590, 12688), (1696, 11895), (1830, 11024), (1952, 10335), (2067, 9760), (2080, 9699), (2120, 9516), (2379, 8480), (2440, 8268), (2544, 7930), (2756, 7320), (2928, 6890), (3120, 6466), (3172, 6360), (3180, 6344), (3233, 6240), (3445, 5856), (3660, 5512), (3965, 5088), (4134, 4880), (4240, 4758)]