802640

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{127}}^1$

素因数の和:219

約数の個数: 40

約数和(自身を含む): 1904640

約数和(自身を除く): 1102000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 127, 158, 254, 316, 395, 508, 632, 635, 790, 1016, 1264, 1270, 1580, 2032, 2540, 3160, 5080, 6320, 10033, 10160, 20066, 40132, 50165, 80264, 100330, 160528, 200660, 401320, 802640]

約数ペア:

[(1, 802640), (2, 401320), (4, 200660), (5, 160528), (8, 100330), (10, 80264), (16, 50165), (20, 40132), (40, 20066), (79, 10160), (80, 10033), (127, 6320), (158, 5080), (254, 3160), (316, 2540), (395, 2032), (508, 1580), (632, 1270), (635, 1264), (790, 1016)]