521740

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{1373}}^1$

素因数の和:1401

約数の個数: 24

約数和(自身を含む): 1154160

約数和(自身を除く): 632420

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 1373, 2746, 5492, 6865, 13730, 26087, 27460, 52174, 104348, 130435, 260870, 521740]

約数ペア:

[(1, 521740), (2, 260870), (4, 130435), (5, 104348), (10, 52174), (19, 27460), (20, 26087), (38, 13730), (76, 6865), (95, 5492), (190, 2746), (380, 1373)]