81318880

素因数分解:

$2^5\times 5^1\times {\mathrm{508243}}^1$

素因数の和:508258

約数の個数: 24

約数和(自身を含む): 192116232

約数和(自身を除く): 110797352

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 508243, 1016486, 2032972, 2541215, 4065944, 5082430, 8131888, 10164860, 16263776, 20329720, 40659440, 81318880]

約数ペア:

[(1, 81318880), (2, 40659440), (4, 20329720), (5, 16263776), (8, 10164860), (10, 8131888), (16, 5082430), (20, 4065944), (32, 2541215), (40, 2032972), (80, 1016486), (160, 508243)]