20789288

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{113}}^1$

素因数の和:222

約数の個数: 64

約数和(自身を含む): 44528400

約数和(自身を除く): 23739112

約数列:

[1, 2, 4, 8, 13, 26, 29, 52, 58, 61, 104, 113, 116, 122, 226, 232, 244, 377, 452, 488, 754, 793, 904, 1469, 1508, 1586, 1769, 2938, 3016, 3172, 3277, 3538, 5876, 6344, 6554, 6893, 7076, 11752, 13108, 13786, 14152, 22997, 26216, 27572, 42601, 45994, 55144, 85202, 89609, 91988, 170404, 179218, 183976, 199897, 340808, 358436, 399794, 716872, 799588, 1599176, 2598661, 5197322, 10394644, 20789288]

約数ペア:

[(1, 20789288), (2, 10394644), (4, 5197322), (8, 2598661), (13, 1599176), (26, 799588), (29, 716872), (52, 399794), (58, 358436), (61, 340808), (104, 199897), (113, 183976), (116, 179218), (122, 170404), (226, 91988), (232, 89609), (244, 85202), (377, 55144), (452, 45994), (488, 42601), (754, 27572), (793, 26216), (904, 22997), (1469, 14152), (1508, 13786), (1586, 13108), (1769, 11752), (2938, 7076), (3016, 6893), (3172, 6554), (3277, 6344), (3538, 5876)]