81262740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{104183}}^1$

素因数の和:104208

約数の個数: 48

約数和(自身を含む): 245040768

約数和(自身を除く): 163778028

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, 780, 104183, 208366, 312549, 416732, 520915, 625098, 1041830, 1250196, 1354379, 1562745, 2083660, 2708758, 3125490, 4063137, 5417516, 6250980, 6771895, 8126274, 13543790, 16252548, 20315685, 27087580, 40631370, 81262740]

約数ペア:

[(1, 81262740), (2, 40631370), (3, 27087580), (4, 20315685), (5, 16252548), (6, 13543790), (10, 8126274), (12, 6771895), (13, 6250980), (15, 5417516), (20, 4063137), (26, 3125490), (30, 2708758), (39, 2083660), (52, 1562745), (60, 1354379), (65, 1250196), (78, 1041830), (130, 625098), (156, 520915), (195, 416732), (260, 312549), (390, 208366), (780, 104183)]