21261378

素因数分解:

$2^1\times 3^1\times {\mathrm{67}}^1\times {\mathrm{52889}}^1$

素因数の和:52961

約数の個数: 16

約数和(自身を含む): 43158240

約数和(自身を除く): 21896862

約数列:

[1, 2, 3, 6, 67, 134, 201, 402, 52889, 105778, 158667, 317334, 3543563, 7087126, 10630689, 21261378]

約数ペア:

[(1, 21261378), (2, 10630689), (3, 7087126), (6, 3543563), (67, 317334), (134, 158667), (201, 105778), (402, 52889)]