18815690870

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{839}}^1\times {\mathrm{991}}^1$

素因数の和:1941

約数の個数: 64

約数和(自身を含む): 35517726720

約数和(自身を除く): 16702035850

約数列:

[1, 2, 5, 10, 31, 62, 73, 146, 155, 310, 365, 730, 839, 991, 1678, 1982, 2263, 4195, 4526, 4955, 8390, 9910, 11315, 22630, 26009, 30721, 52018, 61247, 61442, 72343, 122494, 130045, 144686, 153605, 260090, 306235, 307210, 361715, 612470, 723430, 831449, 1662898, 1898657, 2242633, 3797314, 4157245, 4485266, 8314490, 9493285, 11213165, 18986570, 22426330, 25774919, 51549838, 60695777, 121391554, 128874595, 257749190, 303478885, 606957770, 1881569087, 3763138174, 9407845435, 18815690870]

約数ペア:

[(1, 18815690870), (2, 9407845435), (5, 3763138174), (10, 1881569087), (31, 606957770), (62, 303478885), (73, 257749190), (146, 128874595), (155, 121391554), (310, 60695777), (365, 51549838), (730, 25774919), (839, 22426330), (991, 18986570), (1678, 11213165), (1982, 9493285), (2263, 8314490), (4195, 4485266), (4526, 4157245), (4955, 3797314), (8390, 2242633), (9910, 1898657), (11315, 1662898), (22630, 831449), (26009, 723430), (30721, 612470), (52018, 361715), (61247, 307210), (61442, 306235), (72343, 260090), (122494, 153605), (130045, 144686)]