56780020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{4231}}^1$

素因数の和:4312

約数の個数: 48

約数和(自身を含む): 132241536

約数和(自身を除く): 75461516

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 61, 110, 122, 220, 244, 305, 610, 671, 1220, 1342, 2684, 3355, 4231, 6710, 8462, 13420, 16924, 21155, 42310, 46541, 84620, 93082, 186164, 232705, 258091, 465410, 516182, 930820, 1032364, 1290455, 2580910, 2839001, 5161820, 5678002, 11356004, 14195005, 28390010, 56780020]

約数ペア:

[(1, 56780020), (2, 28390010), (4, 14195005), (5, 11356004), (10, 5678002), (11, 5161820), (20, 2839001), (22, 2580910), (44, 1290455), (55, 1032364), (61, 930820), (110, 516182), (122, 465410), (220, 258091), (244, 232705), (305, 186164), (610, 93082), (671, 84620), (1220, 46541), (1342, 42310), (2684, 21155), (3355, 16924), (4231, 13420), (6710, 8462)]