51990380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{359}}^1\times {\mathrm{557}}^1$

素因数の和:938

約数の個数: 48

約数和(自身を含む): 118117440

約数和(自身を除く): 66127060

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 359, 557, 718, 1114, 1436, 1795, 2228, 2785, 3590, 4667, 5570, 7180, 7241, 9334, 11140, 14482, 18668, 23335, 28964, 36205, 46670, 72410, 93340, 144820, 199963, 399926, 799852, 999815, 1999630, 2599519, 3999260, 5199038, 10398076, 12997595, 25995190, 51990380]

約数ペア:

[(1, 51990380), (2, 25995190), (4, 12997595), (5, 10398076), (10, 5199038), (13, 3999260), (20, 2599519), (26, 1999630), (52, 999815), (65, 799852), (130, 399926), (260, 199963), (359, 144820), (557, 93340), (718, 72410), (1114, 46670), (1436, 36205), (1795, 28964), (2228, 23335), (2785, 18668), (3590, 14482), (4667, 11140), (5570, 9334), (7180, 7241)]