19878460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{1327}}^1$

素因数の和:1450

約数の個数: 48

約数和(自身を含む): 48190464

約数和(自身を除く): 28312004

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 107, 140, 214, 428, 535, 749, 1070, 1327, 1498, 2140, 2654, 2996, 3745, 5308, 6635, 7490, 9289, 13270, 14980, 18578, 26540, 37156, 46445, 92890, 141989, 185780, 283978, 567956, 709945, 993923, 1419890, 1987846, 2839780, 3975692, 4969615, 9939230, 19878460]

約数ペア:

[(1, 19878460), (2, 9939230), (4, 4969615), (5, 3975692), (7, 2839780), (10, 1987846), (14, 1419890), (20, 993923), (28, 709945), (35, 567956), (70, 283978), (107, 185780), (140, 141989), (214, 92890), (428, 46445), (535, 37156), (749, 26540), (1070, 18578), (1327, 14980), (1498, 13270), (2140, 9289), (2654, 7490), (2996, 6635), (3745, 5308)]