21523480

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{4447}}^1$

素因数の和:4480

約数の個数: 48

約数和(自身を含む): 53242560

約数和(自身を除く): 31719080

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 121, 220, 242, 440, 484, 605, 968, 1210, 2420, 4447, 4840, 8894, 17788, 22235, 35576, 44470, 48917, 88940, 97834, 177880, 195668, 244585, 391336, 489170, 538087, 978340, 1076174, 1956680, 2152348, 2690435, 4304696, 5380870, 10761740, 21523480]

約数ペア:

[(1, 21523480), (2, 10761740), (4, 5380870), (5, 4304696), (8, 2690435), (10, 2152348), (11, 1956680), (20, 1076174), (22, 978340), (40, 538087), (44, 489170), (55, 391336), (88, 244585), (110, 195668), (121, 177880), (220, 97834), (242, 88940), (440, 48917), (484, 44470), (605, 35576), (968, 22235), (1210, 17788), (2420, 8894), (4447, 4840)]