21055450

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{1117}}^1$

素因数の和:1171

約数の個数: 48

約数和(自身を含む): 43669080

約数和(自身を除く): 22613630

約数列:

[1, 2, 5, 10, 13, 25, 26, 29, 50, 58, 65, 130, 145, 290, 325, 377, 650, 725, 754, 1117, 1450, 1885, 2234, 3770, 5585, 9425, 11170, 14521, 18850, 27925, 29042, 32393, 55850, 64786, 72605, 145210, 161965, 323930, 363025, 421109, 726050, 809825, 842218, 1619650, 2105545, 4211090, 10527725, 21055450]

約数ペア:

[(1, 21055450), (2, 10527725), (5, 4211090), (10, 2105545), (13, 1619650), (25, 842218), (26, 809825), (29, 726050), (50, 421109), (58, 363025), (65, 323930), (130, 161965), (145, 145210), (290, 72605), (325, 64786), (377, 55850), (650, 32393), (725, 29042), (754, 27925), (1117, 18850), (1450, 14521), (1885, 11170), (2234, 9425), (3770, 5585)]