74640780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{181}}^1$

素因数の和:304

約数の個数: 144

約数和(自身を含む): 238492800

約数和(自身を除く): 163852020

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 29, 30, 36, 45, 58, 60, 79, 87, 90, 116, 145, 158, 174, 180, 181, 237, 261, 290, 316, 348, 362, 395, 435, 474, 522, 543, 580, 711, 724, 790, 870, 905, 948, 1044, 1086, 1185, 1305, 1422, 1580, 1629, 1740, 1810, 2172, 2291, 2370, 2610, 2715, 2844, 3258, 3555, 3620, 4582, 4740, 5220, 5249, 5430, 6516, 6873, 7110, 8145, 9164, 10498, 10860, 11455, 13746, 14220, 14299, 15747, 16290, 20619, 20996, 22910, 26245, 27492, 28598, 31494, 32580, 34365, 41238, 42897, 45820, 47241, 52490, 57196, 62988, 68730, 71495, 78735, 82476, 85794, 94482, 103095, 104980, 128691, 137460, 142990, 157470, 171588, 188964, 206190, 214485, 236205, 257382, 285980, 314940, 412380, 414671, 428970, 472410, 514764, 643455, 829342, 857940, 944820, 1244013, 1286910, 1658684, 2073355, 2488026, 2573820, 3732039, 4146710, 4976052, 6220065, 7464078, 8293420, 12440130, 14928156, 18660195, 24880260, 37320390, 74640780]

約数ペア:

[(1, 74640780), (2, 37320390), (3, 24880260), (4, 18660195), (5, 14928156), (6, 12440130), (9, 8293420), (10, 7464078), (12, 6220065), (15, 4976052), (18, 4146710), (20, 3732039), (29, 2573820), (30, 2488026), (36, 2073355), (45, 1658684), (58, 1286910), (60, 1244013), (79, 944820), (87, 857940), (90, 829342), (116, 643455), (145, 514764), (158, 472410), (174, 428970), (180, 414671), (181, 412380), (237, 314940), (261, 285980), (290, 257382), (316, 236205), (348, 214485), (362, 206190), (395, 188964), (435, 171588), (474, 157470), (522, 142990), (543, 137460), (580, 128691), (711, 104980), (724, 103095), (790, 94482), (870, 85794), (905, 82476), (948, 78735), (1044, 71495), (1086, 68730), (1185, 62988), (1305, 57196), (1422, 52490), (1580, 47241), (1629, 45820), (1740, 42897), (1810, 41238), (2172, 34365), (2291, 32580), (2370, 31494), (2610, 28598), (2715, 27492), (2844, 26245), (3258, 22910), (3555, 20996), (3620, 20619), (4582, 16290), (4740, 15747), (5220, 14299), (5249, 14220), (5430, 13746), (6516, 11455), (6873, 10860), (7110, 10498), (8145, 9164)]