21264308

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{239}}^1$

素因数の和:344

約数の個数: 48

約数和(自身を含む): 42336000

約数和(自身を除く): 21071692

約数列:

[1, 2, 4, 13, 26, 29, 52, 58, 59, 116, 118, 236, 239, 377, 478, 754, 767, 956, 1508, 1534, 1711, 3068, 3107, 3422, 6214, 6844, 6931, 12428, 13862, 14101, 22243, 27724, 28202, 44486, 56404, 88972, 90103, 180206, 183313, 360412, 366626, 408929, 733252, 817858, 1635716, 5316077, 10632154, 21264308]

約数ペア:

[(1, 21264308), (2, 10632154), (4, 5316077), (13, 1635716), (26, 817858), (29, 733252), (52, 408929), (58, 366626), (59, 360412), (116, 183313), (118, 180206), (236, 90103), (239, 88972), (377, 56404), (478, 44486), (754, 28202), (767, 27724), (956, 22243), (1508, 14101), (1534, 13862), (1711, 12428), (3068, 6931), (3107, 6844), (3422, 6214)]