13123540

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{347}}^1$

素因数の和:448

約数の個数: 48

約数和(自身を含む): 28998144

約数和(自身を除く): 15874604

約数列:

[1, 2, 4, 5, 10, 20, 31, 61, 62, 122, 124, 155, 244, 305, 310, 347, 610, 620, 694, 1220, 1388, 1735, 1891, 3470, 3782, 6940, 7564, 9455, 10757, 18910, 21167, 21514, 37820, 42334, 43028, 53785, 84668, 105835, 107570, 211670, 215140, 423340, 656177, 1312354, 2624708, 3280885, 6561770, 13123540]

約数ペア:

[(1, 13123540), (2, 6561770), (4, 3280885), (5, 2624708), (10, 1312354), (20, 656177), (31, 423340), (61, 215140), (62, 211670), (122, 107570), (124, 105835), (155, 84668), (244, 53785), (305, 43028), (310, 42334), (347, 37820), (610, 21514), (620, 21167), (694, 18910), (1220, 10757), (1388, 9455), (1735, 7564), (1891, 6940), (3470, 3782)]