21108412

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{2963}}^1$

素因数の和:3117

約数の個数: 24

約数和(自身を含む): 40085136

約数和(自身を除く): 18976724

約数列:

[1, 2, 4, 13, 26, 52, 137, 274, 548, 1781, 2963, 3562, 5926, 7124, 11852, 38519, 77038, 154076, 405931, 811862, 1623724, 5277103, 10554206, 21108412]

約数ペア:

[(1, 21108412), (2, 10554206), (4, 5277103), (13, 1623724), (26, 811862), (52, 405931), (137, 154076), (274, 77038), (548, 38519), (1781, 11852), (2963, 7124), (3562, 5926)]