66542120

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1\times {\mathrm{521}}^1$

素因数の和:666

約数の個数: 64

約数和(自身を含む): 156349440

約数和(自身を除く): 89807320

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 103, 124, 155, 206, 248, 310, 412, 515, 521, 620, 824, 1030, 1042, 1240, 2060, 2084, 2605, 3193, 4120, 4168, 5210, 6386, 10420, 12772, 15965, 16151, 20840, 25544, 31930, 32302, 53663, 63860, 64604, 80755, 107326, 127720, 129208, 161510, 214652, 268315, 323020, 429304, 536630, 646040, 1073260, 1663553, 2146520, 3327106, 6654212, 8317765, 13308424, 16635530, 33271060, 66542120]

約数ペア:

[(1, 66542120), (2, 33271060), (4, 16635530), (5, 13308424), (8, 8317765), (10, 6654212), (20, 3327106), (31, 2146520), (40, 1663553), (62, 1073260), (103, 646040), (124, 536630), (155, 429304), (206, 323020), (248, 268315), (310, 214652), (412, 161510), (515, 129208), (521, 127720), (620, 107326), (824, 80755), (1030, 64604), (1042, 63860), (1240, 53663), (2060, 32302), (2084, 31930), (2605, 25544), (3193, 20840), (4120, 16151), (4168, 15965), (5210, 12772), (6386, 10420)]