21563252

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{109}}^1\times {\mathrm{137}}^1$

素因数の和:288

約数の個数: 36

約数和(自身を含む): 40485060

約数和(自身を除く): 18921808

約数列:

[1, 2, 4, 19, 38, 76, 109, 137, 218, 274, 361, 436, 548, 722, 1444, 2071, 2603, 4142, 5206, 8284, 10412, 14933, 29866, 39349, 49457, 59732, 78698, 98914, 157396, 197828, 283727, 567454, 1134908, 5390813, 10781626, 21563252]

約数ペア:

[(1, 21563252), (2, 10781626), (4, 5390813), (19, 1134908), (38, 567454), (76, 283727), (109, 197828), (137, 157396), (218, 98914), (274, 78698), (361, 59732), (436, 49457), (548, 39349), (722, 29866), (1444, 14933), (2071, 10412), (2603, 8284), (4142, 5206)]