401320

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{127}}^1$

素因数の和:217

約数の個数: 32

約数和(自身を含む): 921600

約数和(自身を除く): 520280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 127, 158, 254, 316, 395, 508, 632, 635, 790, 1016, 1270, 1580, 2540, 3160, 5080, 10033, 20066, 40132, 50165, 80264, 100330, 200660, 401320]

約数ペア:

[(1, 401320), (2, 200660), (4, 100330), (5, 80264), (8, 50165), (10, 40132), (20, 20066), (40, 10033), (79, 5080), (127, 3160), (158, 2540), (254, 1580), (316, 1270), (395, 1016), (508, 790), (632, 635)]