215915511

素因数分解:

$3^1\times 7^2\times {\mathrm{139}}^1\times {\mathrm{10567}}^1$

素因数の和:10723

約数の個数: 24

約数和(自身を含む): 337330560

約数和(自身を除く): 121415049

約数列:

[1, 3, 7, 21, 49, 139, 147, 417, 973, 2919, 6811, 10567, 20433, 31701, 73969, 221907, 517783, 1468813, 1553349, 4406439, 10281691, 30845073, 71971837, 215915511]

約数ペア:

[(1, 215915511), (3, 71971837), (7, 30845073), (21, 10281691), (49, 4406439), (139, 1553349), (147, 1468813), (417, 517783), (973, 221907), (2919, 73969), (6811, 31701), (10567, 20433)]