55555780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{4091}}^1$

素因数の和:4204

約数の個数: 48

約数和(自身を含む): 134741376

約数和(自身を除く): 79185596

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 97, 140, 194, 388, 485, 679, 970, 1358, 1940, 2716, 3395, 4091, 6790, 8182, 13580, 16364, 20455, 28637, 40910, 57274, 81820, 114548, 143185, 286370, 396827, 572740, 793654, 1587308, 1984135, 2777789, 3968270, 5555578, 7936540, 11111156, 13888945, 27777890, 55555780]

約数ペア:

[(1, 55555780), (2, 27777890), (4, 13888945), (5, 11111156), (7, 7936540), (10, 5555578), (14, 3968270), (20, 2777789), (28, 1984135), (35, 1587308), (70, 793654), (97, 572740), (140, 396827), (194, 286370), (388, 143185), (485, 114548), (679, 81820), (970, 57274), (1358, 40910), (1940, 28637), (2716, 20455), (3395, 16364), (4091, 13580), (6790, 8182)]