7899980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{241}}^1$

素因数の和:410

約数の個数: 48

約数和(自身を含む): 18295200

約数和(自身を除く): 10395220

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 149, 220, 241, 298, 482, 596, 745, 964, 1205, 1490, 1639, 2410, 2651, 2980, 3278, 4820, 5302, 6556, 8195, 10604, 13255, 16390, 26510, 32780, 35909, 53020, 71818, 143636, 179545, 359090, 394999, 718180, 789998, 1579996, 1974995, 3949990, 7899980]

約数ペア:

[(1, 7899980), (2, 3949990), (4, 1974995), (5, 1579996), (10, 789998), (11, 718180), (20, 394999), (22, 359090), (44, 179545), (55, 143636), (110, 71818), (149, 53020), (220, 35909), (241, 32780), (298, 26510), (482, 16390), (596, 13255), (745, 10604), (964, 8195), (1205, 6556), (1490, 5302), (1639, 4820), (2410, 3278), (2651, 2980)]