21404355

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{10729}}^1$

素因数の和:10763

約数の個数: 32

約数和(自身を含む): 41203200

約数和(自身を除く): 19798845

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 57, 95, 105, 133, 285, 399, 665, 1995, 10729, 32187, 53645, 75103, 160935, 203851, 225309, 375515, 611553, 1019255, 1126545, 1426957, 3057765, 4280871, 7134785, 21404355]

約数ペア:

[(1, 21404355), (3, 7134785), (5, 4280871), (7, 3057765), (15, 1426957), (19, 1126545), (21, 1019255), (35, 611553), (57, 375515), (95, 225309), (105, 203851), (133, 160935), (285, 75103), (399, 53645), (665, 32187), (1995, 10729)]