21400912

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{3319}}^1$

素因数の和:3371

約数の個数: 40

約数和(自身を含む): 46108160

約数和(自身を除く): 24707248

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 52, 62, 104, 124, 208, 248, 403, 496, 806, 1612, 3224, 3319, 6448, 6638, 13276, 26552, 43147, 53104, 86294, 102889, 172588, 205778, 345176, 411556, 690352, 823112, 1337557, 1646224, 2675114, 5350228, 10700456, 21400912]

約数ペア:

[(1, 21400912), (2, 10700456), (4, 5350228), (8, 2675114), (13, 1646224), (16, 1337557), (26, 823112), (31, 690352), (52, 411556), (62, 345176), (104, 205778), (124, 172588), (208, 102889), (248, 86294), (403, 53104), (496, 43147), (806, 26552), (1612, 13276), (3224, 6638), (3319, 6448)]