21354680

素因数分解:

$2^3\times 5^1\times {\mathrm{149}}^1\times {\mathrm{3583}}^1$

素因数の和:3743

約数の個数: 32

約数和(自身を含む): 48384000

約数和(自身を除く): 27029320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 149, 298, 596, 745, 1192, 1490, 2980, 3583, 5960, 7166, 14332, 17915, 28664, 35830, 71660, 143320, 533867, 1067734, 2135468, 2669335, 4270936, 5338670, 10677340, 21354680]

約数ペア:

[(1, 21354680), (2, 10677340), (4, 5338670), (5, 4270936), (8, 2669335), (10, 2135468), (20, 1067734), (40, 533867), (149, 143320), (298, 71660), (596, 35830), (745, 28664), (1192, 17915), (1490, 14332), (2980, 7166), (3583, 5960)]