538980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{691}}^1$

素因数の和:716

約数の個数: 48

約数和(自身を含む): 1627584

約数和(自身を除く): 1088604

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 691, 780, 1382, 2073, 2764, 3455, 4146, 6910, 8292, 8983, 10365, 13820, 17966, 20730, 26949, 35932, 41460, 44915, 53898, 89830, 107796, 134745, 179660, 269490, 538980]

約数ペア:

[(1, 538980), (2, 269490), (3, 179660), (4, 134745), (5, 107796), (6, 89830), (10, 53898), (12, 44915), (13, 41460), (15, 35932), (20, 26949), (26, 20730), (30, 17966), (39, 13820), (52, 10365), (60, 8983), (65, 8292), (78, 6910), (130, 4146), (156, 3455), (195, 2764), (260, 2073), (390, 1382), (691, 780)]