939640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{139}}^1$

素因数の和:176

約数の個数: 48

約数和(自身を含む): 2305800

約数和(自身を除く): 1366160

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 139, 169, 260, 278, 338, 520, 556, 676, 695, 845, 1112, 1352, 1390, 1690, 1807, 2780, 3380, 3614, 5560, 6760, 7228, 9035, 14456, 18070, 23491, 36140, 46982, 72280, 93964, 117455, 187928, 234910, 469820, 939640]

約数ペア:

[(1, 939640), (2, 469820), (4, 234910), (5, 187928), (8, 117455), (10, 93964), (13, 72280), (20, 46982), (26, 36140), (40, 23491), (52, 18070), (65, 14456), (104, 9035), (130, 7228), (139, 6760), (169, 5560), (260, 3614), (278, 3380), (338, 2780), (520, 1807), (556, 1690), (676, 1390), (695, 1352), (845, 1112)]