51319180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{2621}}^1$

素因数の和:2730

約数の個数: 48

約数和(自身を含む): 118933920

約数和(自身を除く): 67614740

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 178, 220, 356, 445, 890, 979, 1780, 1958, 2621, 3916, 4895, 5242, 9790, 10484, 13105, 19580, 26210, 28831, 52420, 57662, 115324, 144155, 233269, 288310, 466538, 576620, 933076, 1166345, 2332690, 2565959, 4665380, 5131918, 10263836, 12829795, 25659590, 51319180]

約数ペア:

[(1, 51319180), (2, 25659590), (4, 12829795), (5, 10263836), (10, 5131918), (11, 4665380), (20, 2565959), (22, 2332690), (44, 1166345), (55, 933076), (89, 576620), (110, 466538), (178, 288310), (220, 233269), (356, 144155), (445, 115324), (890, 57662), (979, 52420), (1780, 28831), (1958, 26210), (2621, 19580), (3916, 13105), (4895, 10484), (5242, 9790)]