18856405960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{2172397}}^1$

素因数の和:2172446

約数の個数: 64

約数和(自身を含む): 50052049920

約数和(自身を除く): 31195643960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 124, 140, 155, 217, 248, 280, 310, 434, 620, 868, 1085, 1240, 1736, 2170, 4340, 8680, 2172397, 4344794, 8689588, 10861985, 15206779, 17379176, 21723970, 30413558, 43447940, 60827116, 67344307, 76033895, 86895880, 121654232, 134688614, 152067790, 269377228, 304135580, 336721535, 471410149, 538754456, 608271160, 673443070, 942820298, 1346886140, 1885640596, 2357050745, 2693772280, 3771281192, 4714101490, 9428202980, 18856405960]

約数ペア:

[(1, 18856405960), (2, 9428202980), (4, 4714101490), (5, 3771281192), (7, 2693772280), (8, 2357050745), (10, 1885640596), (14, 1346886140), (20, 942820298), (28, 673443070), (31, 608271160), (35, 538754456), (40, 471410149), (56, 336721535), (62, 304135580), (70, 269377228), (124, 152067790), (140, 134688614), (155, 121654232), (217, 86895880), (248, 76033895), (280, 67344307), (310, 60827116), (434, 43447940), (620, 30413558), (868, 21723970), (1085, 17379176), (1240, 15206779), (1736, 10861985), (2170, 8689588), (4340, 4344794), (8680, 2172397)]