71237980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{1789}}^1$

素因数の和:1990

約数の個数: 48

約数和(自身を含む): 164193120

約数和(自身を除く): 92955140

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 181, 220, 362, 724, 905, 1789, 1810, 1991, 3578, 3620, 3982, 7156, 7964, 8945, 9955, 17890, 19679, 19910, 35780, 39358, 39820, 78716, 98395, 196790, 323809, 393580, 647618, 1295236, 1619045, 3238090, 3561899, 6476180, 7123798, 14247596, 17809495, 35618990, 71237980]

約数ペア:

[(1, 71237980), (2, 35618990), (4, 17809495), (5, 14247596), (10, 7123798), (11, 6476180), (20, 3561899), (22, 3238090), (44, 1619045), (55, 1295236), (110, 647618), (181, 393580), (220, 323809), (362, 196790), (724, 98395), (905, 78716), (1789, 39820), (1810, 39358), (1991, 35780), (3578, 19910), (3620, 19679), (3982, 17890), (7156, 9955), (7964, 8945)]