20984730

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{4139}}^1$

素因数の和:4175

約数の個数: 48

約数和(自身を含む): 54548640

約数和(自身を除く): 33563910

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 169, 195, 338, 390, 507, 845, 1014, 1690, 2535, 4139, 5070, 8278, 12417, 20695, 24834, 41390, 53807, 62085, 107614, 124170, 161421, 269035, 322842, 538070, 699491, 807105, 1398982, 1614210, 2098473, 3497455, 4196946, 6994910, 10492365, 20984730]

約数ペア:

[(1, 20984730), (2, 10492365), (3, 6994910), (5, 4196946), (6, 3497455), (10, 2098473), (13, 1614210), (15, 1398982), (26, 807105), (30, 699491), (39, 538070), (65, 322842), (78, 269035), (130, 161421), (169, 124170), (195, 107614), (338, 62085), (390, 53807), (507, 41390), (845, 24834), (1014, 20695), (1690, 12417), (2535, 8278), (4139, 5070)]