20204212

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{137}}^1\times {\mathrm{229}}^1$

素因数の和:400

約数の個数: 48

約数和(自身を含む): 42658560

約数和(自身を除く): 22454348

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 92, 137, 161, 229, 274, 322, 458, 548, 644, 916, 959, 1603, 1918, 3151, 3206, 3836, 5267, 6302, 6412, 10534, 12604, 21068, 22057, 31373, 36869, 44114, 62746, 73738, 88228, 125492, 147476, 219611, 439222, 721579, 878444, 1443158, 2886316, 5051053, 10102106, 20204212]

約数ペア:

[(1, 20204212), (2, 10102106), (4, 5051053), (7, 2886316), (14, 1443158), (23, 878444), (28, 721579), (46, 439222), (92, 219611), (137, 147476), (161, 125492), (229, 88228), (274, 73738), (322, 62746), (458, 44114), (548, 36869), (644, 31373), (916, 22057), (959, 21068), (1603, 12604), (1918, 10534), (3151, 6412), (3206, 6302), (3836, 5267)]