2009451775

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{163}}^1\times {\mathrm{15907}}^1$

素因数の和:16111

約数の個数: 24

約数和(自身を含む): 2588040704

約数和(自身を除く): 578588929

約数列:

[1, 5, 25, 31, 155, 163, 775, 815, 4075, 5053, 15907, 25265, 79535, 126325, 397675, 493117, 2465585, 2592841, 12327925, 12964205, 64821025, 80378071, 401890355, 2009451775]

約数ペア:

[(1, 2009451775), (5, 401890355), (25, 80378071), (31, 64821025), (155, 12964205), (163, 12327925), (775, 2592841), (815, 2465585), (4075, 493117), (5053, 397675), (15907, 126325), (25265, 79535)]