19815268

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{449}}^1$

素因数の和:540

約数の個数: 48

約数和(自身を含む): 40824000

約数和(自身を除く): 21008732

約数列:

[1, 2, 4, 11, 17, 22, 34, 44, 59, 68, 118, 187, 236, 374, 449, 649, 748, 898, 1003, 1298, 1796, 2006, 2596, 4012, 4939, 7633, 9878, 11033, 15266, 19756, 22066, 26491, 30532, 44132, 52982, 83963, 105964, 167926, 291401, 335852, 450347, 582802, 900694, 1165604, 1801388, 4953817, 9907634, 19815268]

約数ペア:

[(1, 19815268), (2, 9907634), (4, 4953817), (11, 1801388), (17, 1165604), (22, 900694), (34, 582802), (44, 450347), (59, 335852), (68, 291401), (118, 167926), (187, 105964), (236, 83963), (374, 52982), (449, 44132), (649, 30532), (748, 26491), (898, 22066), (1003, 19756), (1298, 15266), (1796, 11033), (2006, 9878), (2596, 7633), (4012, 4939)]