25878320

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{167}}^1$

素因数の和:342

約数の個数: 80

約数和(自身を含む): 65620800

約数和(自身を除く): 39742480

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 149, 167, 208, 260, 298, 334, 520, 596, 668, 745, 835, 1040, 1192, 1336, 1490, 1670, 1937, 2171, 2384, 2672, 2980, 3340, 3874, 4342, 5960, 6680, 7748, 8684, 9685, 10855, 11920, 13360, 15496, 17368, 19370, 21710, 24883, 30992, 34736, 38740, 43420, 49766, 77480, 86840, 99532, 124415, 154960, 173680, 199064, 248830, 323479, 398128, 497660, 646958, 995320, 1293916, 1617395, 1990640, 2587832, 3234790, 5175664, 6469580, 12939160, 25878320]

約数ペア:

[(1, 25878320), (2, 12939160), (4, 6469580), (5, 5175664), (8, 3234790), (10, 2587832), (13, 1990640), (16, 1617395), (20, 1293916), (26, 995320), (40, 646958), (52, 497660), (65, 398128), (80, 323479), (104, 248830), (130, 199064), (149, 173680), (167, 154960), (208, 124415), (260, 99532), (298, 86840), (334, 77480), (520, 49766), (596, 43420), (668, 38740), (745, 34736), (835, 30992), (1040, 24883), (1192, 21710), (1336, 19370), (1490, 17368), (1670, 15496), (1937, 13360), (2171, 11920), (2384, 10855), (2672, 9685), (2980, 8684), (3340, 7748), (3874, 6680), (4342, 5960)]