21438935

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{313}}^1$

素因数の和:447

約数の個数: 32

約数和(自身を含む): 31349760

約数和(自身を除く): 9910825

約数列:

[1, 5, 7, 19, 35, 95, 103, 133, 313, 515, 665, 721, 1565, 1957, 2191, 3605, 5947, 9785, 10955, 13699, 29735, 32239, 41629, 68495, 161195, 208145, 225673, 612541, 1128365, 3062705, 4287787, 21438935]

約数ペア:

[(1, 21438935), (5, 4287787), (7, 3062705), (19, 1128365), (35, 612541), (95, 225673), (103, 208145), (133, 161195), (313, 68495), (515, 41629), (665, 32239), (721, 29735), (1565, 13699), (1957, 10955), (2191, 9785), (3605, 5947)]