211677980

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{149069}}^1$

素因数の和:149149

約数の個数: 24

約数和(自身を含む): 450787680

約数和(自身を除く): 239109700

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 149069, 298138, 596276, 745345, 1490690, 2981380, 10583899, 21167798, 42335596, 52919495, 105838990, 211677980]

約数ペア:

[(1, 211677980), (2, 105838990), (4, 52919495), (5, 42335596), (10, 21167798), (20, 10583899), (71, 2981380), (142, 1490690), (284, 745345), (355, 596276), (710, 298138), (1420, 149069)]