21605090

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{8747}}^1$

素因数の和:8786

約数の個数: 32

約数和(自身を含む): 44089920

約数和(自身を除く): 22484830

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 65, 95, 130, 190, 247, 494, 1235, 2470, 8747, 17494, 43735, 87470, 113711, 166193, 227422, 332386, 568555, 830965, 1137110, 1661930, 2160509, 4321018, 10802545, 21605090]

約数ペア:

[(1, 21605090), (2, 10802545), (5, 4321018), (10, 2160509), (13, 1661930), (19, 1137110), (26, 830965), (38, 568555), (65, 332386), (95, 227422), (130, 166193), (190, 113711), (247, 87470), (494, 43735), (1235, 17494), (2470, 8747)]