81541240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{3943}}^1$

素因数の和:4012

約数の個数: 64

約数和(自身を含む): 204456960

約数和(自身を除く): 122915720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 47, 55, 88, 94, 110, 188, 220, 235, 376, 440, 470, 517, 940, 1034, 1880, 2068, 2585, 3943, 4136, 5170, 7886, 10340, 15772, 19715, 20680, 31544, 39430, 43373, 78860, 86746, 157720, 173492, 185321, 216865, 346984, 370642, 433730, 741284, 867460, 926605, 1482568, 1734920, 1853210, 2038531, 3706420, 4077062, 7412840, 8154124, 10192655, 16308248, 20385310, 40770620, 81541240]

約数ペア:

[(1, 81541240), (2, 40770620), (4, 20385310), (5, 16308248), (8, 10192655), (10, 8154124), (11, 7412840), (20, 4077062), (22, 3706420), (40, 2038531), (44, 1853210), (47, 1734920), (55, 1482568), (88, 926605), (94, 867460), (110, 741284), (188, 433730), (220, 370642), (235, 346984), (376, 216865), (440, 185321), (470, 173492), (517, 157720), (940, 86746), (1034, 78860), (1880, 43373), (2068, 39430), (2585, 31544), (3943, 20680), (4136, 19715), (5170, 15772), (7886, 10340)]