90390820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{1559}}^1$

素因数の和:1804

約数の個数: 48

約数和(自身を含む): 205470720

約数和(自身を除く): 115079900

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 223, 260, 446, 892, 1115, 1559, 2230, 2899, 3118, 4460, 5798, 6236, 7795, 11596, 14495, 15590, 20267, 28990, 31180, 40534, 57980, 81068, 101335, 202670, 347657, 405340, 695314, 1390628, 1738285, 3476570, 4519541, 6953140, 9039082, 18078164, 22597705, 45195410, 90390820]

約数ペア:

[(1, 90390820), (2, 45195410), (4, 22597705), (5, 18078164), (10, 9039082), (13, 6953140), (20, 4519541), (26, 3476570), (52, 1738285), (65, 1390628), (130, 695314), (223, 405340), (260, 347657), (446, 202670), (892, 101335), (1115, 81068), (1559, 57980), (2230, 40534), (2899, 31180), (3118, 28990), (4460, 20267), (5798, 15590), (6236, 14495), (7795, 11596)]