21153220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{8741}}^1$

素因数の和:8772

約数の個数: 36

約数和(自身を含む): 48832812

約数和(自身を除く): 27679592

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 8741, 17482, 34964, 43705, 87410, 96151, 174820, 192302, 384604, 480755, 961510, 1057661, 1923020, 2115322, 4230644, 5288305, 10576610, 21153220]

約数ペア:

[(1, 21153220), (2, 10576610), (4, 5288305), (5, 4230644), (10, 2115322), (11, 1923020), (20, 1057661), (22, 961510), (44, 480755), (55, 384604), (110, 192302), (121, 174820), (220, 96151), (242, 87410), (484, 43705), (605, 34964), (1210, 17482), (2420, 8741)]