407004927

素因数分解:

$3^1\times 7^2\times {\mathrm{139}}^1\times {\mathrm{19919}}^1$

素因数の和:20075

約数の個数: 24

約数和(自身を含む): 635846400

約数和(自身を除く): 228841473

約数列:

[1, 3, 7, 21, 49, 139, 147, 417, 973, 2919, 6811, 19919, 20433, 59757, 139433, 418299, 976031, 2768741, 2928093, 8306223, 19381187, 58143561, 135668309, 407004927]

約数ペア:

[(1, 407004927), (3, 135668309), (7, 58143561), (21, 19381187), (49, 8306223), (139, 2928093), (147, 2768741), (417, 976031), (973, 418299), (2919, 139433), (6811, 59757), (19919, 20433)]