21927425

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1$

素因数の和:162

約数の個数: 48

約数和(自身を含む): 31872960

約数和(自身を除く): 9945535

約数列:

[1, 5, 13, 19, 25, 53, 65, 67, 95, 247, 265, 325, 335, 475, 689, 871, 1007, 1235, 1273, 1325, 1675, 3445, 3551, 4355, 5035, 6175, 6365, 13091, 16549, 17225, 17755, 21775, 25175, 31825, 46163, 65455, 67469, 82745, 88775, 230815, 327275, 337345, 413725, 877097, 1154075, 1686725, 4385485, 21927425]

約数ペア:

[(1, 21927425), (5, 4385485), (13, 1686725), (19, 1154075), (25, 877097), (53, 413725), (65, 337345), (67, 327275), (95, 230815), (247, 88775), (265, 82745), (325, 67469), (335, 65455), (475, 46163), (689, 31825), (871, 25175), (1007, 21775), (1235, 17755), (1273, 17225), (1325, 16549), (1675, 13091), (3445, 6365), (3551, 6175), (4355, 5035)]