64654020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{5059}}^1$

素因数の和:5145

約数の個数: 72

約数和(自身を含む): 198918720

約数和(自身を除く): 134264700

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 71, 90, 142, 180, 213, 284, 355, 426, 639, 710, 852, 1065, 1278, 1420, 2130, 2556, 3195, 4260, 5059, 6390, 10118, 12780, 15177, 20236, 25295, 30354, 45531, 50590, 60708, 75885, 91062, 101180, 151770, 182124, 227655, 303540, 359189, 455310, 718378, 910620, 1077567, 1436756, 1795945, 2155134, 3232701, 3591890, 4310268, 5387835, 6465402, 7183780, 10775670, 12930804, 16163505, 21551340, 32327010, 64654020]

約数ペア:

[(1, 64654020), (2, 32327010), (3, 21551340), (4, 16163505), (5, 12930804), (6, 10775670), (9, 7183780), (10, 6465402), (12, 5387835), (15, 4310268), (18, 3591890), (20, 3232701), (30, 2155134), (36, 1795945), (45, 1436756), (60, 1077567), (71, 910620), (90, 718378), (142, 455310), (180, 359189), (213, 303540), (284, 227655), (355, 182124), (426, 151770), (639, 101180), (710, 91062), (852, 75885), (1065, 60708), (1278, 50590), (1420, 45531), (2130, 30354), (2556, 25295), (3195, 20236), (4260, 15177), (5059, 12780), (6390, 10118)]