18880440

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{3659}}^1$

素因数の和:3716

約数の個数: 64

約数和(自身を含む): 57974400

約数和(自身を除く): 39093960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 43, 60, 86, 120, 129, 172, 215, 258, 344, 430, 516, 645, 860, 1032, 1290, 1720, 2580, 3659, 5160, 7318, 10977, 14636, 18295, 21954, 29272, 36590, 43908, 54885, 73180, 87816, 109770, 146360, 157337, 219540, 314674, 439080, 472011, 629348, 786685, 944022, 1258696, 1573370, 1888044, 2360055, 3146740, 3776088, 4720110, 6293480, 9440220, 18880440]

約数ペア:

[(1, 18880440), (2, 9440220), (3, 6293480), (4, 4720110), (5, 3776088), (6, 3146740), (8, 2360055), (10, 1888044), (12, 1573370), (15, 1258696), (20, 944022), (24, 786685), (30, 629348), (40, 472011), (43, 439080), (60, 314674), (86, 219540), (120, 157337), (129, 146360), (172, 109770), (215, 87816), (258, 73180), (344, 54885), (430, 43908), (516, 36590), (645, 29272), (860, 21954), (1032, 18295), (1290, 14636), (1720, 10977), (2580, 7318), (3659, 5160)]