31275720

素因数分解:

$2^3\times 3^4\times 5^1\times 7^2\times {\mathrm{197}}^1$

素因数の和:234

約数の個数: 240

約数和(自身を含む): 122904540

約数和(自身を除く): 91628820

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 49, 54, 56, 60, 63, 70, 72, 81, 84, 90, 98, 105, 108, 120, 126, 135, 140, 147, 162, 168, 180, 189, 196, 197, 210, 216, 245, 252, 270, 280, 294, 315, 324, 360, 378, 392, 394, 405, 420, 441, 490, 504, 540, 567, 588, 591, 630, 648, 735, 756, 788, 810, 840, 882, 945, 980, 985, 1080, 1134, 1176, 1182, 1260, 1323, 1379, 1470, 1512, 1576, 1620, 1764, 1773, 1890, 1960, 1970, 2205, 2268, 2364, 2520, 2646, 2758, 2835, 2940, 2955, 3240, 3528, 3546, 3780, 3940, 3969, 4137, 4410, 4536, 4728, 5292, 5319, 5516, 5670, 5880, 5910, 6615, 6895, 7092, 7560, 7880, 7938, 8274, 8820, 8865, 9653, 10584, 10638, 11032, 11340, 11820, 12411, 13230, 13790, 14184, 15876, 15957, 16548, 17640, 17730, 19306, 19845, 20685, 21276, 22680, 23640, 24822, 26460, 26595, 27580, 28959, 31752, 31914, 33096, 35460, 37233, 38612, 39690, 41370, 42552, 48265, 49644, 52920, 53190, 55160, 57918, 62055, 63828, 70920, 74466, 77224, 79380, 79785, 82740, 86877, 96530, 99288, 106380, 111699, 115836, 124110, 127656, 144795, 148932, 158760, 159570, 165480, 173754, 186165, 193060, 212760, 223398, 231672, 248220, 260631, 289590, 297864, 319140, 347508, 372330, 386120, 434385, 446796, 496440, 521262, 558495, 579180, 638280, 695016, 744660, 781893, 868770, 893592, 1042524, 1116990, 1158360, 1303155, 1489320, 1563786, 1737540, 2085048, 2233980, 2606310, 3127572, 3475080, 3909465, 4467960, 5212620, 6255144, 7818930, 10425240, 15637860, 31275720]

約数ペア:

[(1, 31275720), (2, 15637860), (3, 10425240), (4, 7818930), (5, 6255144), (6, 5212620), (7, 4467960), (8, 3909465), (9, 3475080), (10, 3127572), (12, 2606310), (14, 2233980), (15, 2085048), (18, 1737540), (20, 1563786), (21, 1489320), (24, 1303155), (27, 1158360), (28, 1116990), (30, 1042524), (35, 893592), (36, 868770), (40, 781893), (42, 744660), (45, 695016), (49, 638280), (54, 579180), (56, 558495), (60, 521262), (63, 496440), (70, 446796), (72, 434385), (81, 386120), (84, 372330), (90, 347508), (98, 319140), (105, 297864), (108, 289590), (120, 260631), (126, 248220), (135, 231672), (140, 223398), (147, 212760), (162, 193060), (168, 186165), (180, 173754), (189, 165480), (196, 159570), (197, 158760), (210, 148932), (216, 144795), (245, 127656), (252, 124110), (270, 115836), (280, 111699), (294, 106380), (315, 99288), (324, 96530), (360, 86877), (378, 82740), (392, 79785), (394, 79380), (405, 77224), (420, 74466), (441, 70920), (490, 63828), (504, 62055), (540, 57918), (567, 55160), (588, 53190), (591, 52920), (630, 49644), (648, 48265), (735, 42552), (756, 41370), (788, 39690), (810, 38612), (840, 37233), (882, 35460), (945, 33096), (980, 31914), (985, 31752), (1080, 28959), (1134, 27580), (1176, 26595), (1182, 26460), (1260, 24822), (1323, 23640), (1379, 22680), (1470, 21276), (1512, 20685), (1576, 19845), (1620, 19306), (1764, 17730), (1773, 17640), (1890, 16548), (1960, 15957), (1970, 15876), (2205, 14184), (2268, 13790), (2364, 13230), (2520, 12411), (2646, 11820), (2758, 11340), (2835, 11032), (2940, 10638), (2955, 10584), (3240, 9653), (3528, 8865), (3546, 8820), (3780, 8274), (3940, 7938), (3969, 7880), (4137, 7560), (4410, 7092), (4536, 6895), (4728, 6615), (5292, 5910), (5319, 5880), (5516, 5670)]