21507356

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{3019}}^1$

素因数の和:3173

約数の個数: 24

約数和(自身を含む): 40842480

約数和(自身を除く): 19335124

約数列:

[1, 2, 4, 13, 26, 52, 137, 274, 548, 1781, 3019, 3562, 6038, 7124, 12076, 39247, 78494, 156988, 413603, 827206, 1654412, 5376839, 10753678, 21507356]

約数ペア:

[(1, 21507356), (2, 10753678), (4, 5376839), (13, 1654412), (26, 827206), (52, 413603), (137, 156988), (274, 78494), (548, 39247), (1781, 12076), (3019, 7124), (3562, 6038)]