21538044

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{397}}^1$

素因数の和:555

約数の個数: 72

約数和(自身を含む): 59977008

約数和(自身を除く): 38438964

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 33, 36, 44, 66, 99, 132, 137, 198, 274, 396, 397, 411, 548, 794, 822, 1191, 1233, 1507, 1588, 1644, 2382, 2466, 3014, 3573, 4367, 4521, 4764, 4932, 6028, 7146, 8734, 9042, 13101, 13563, 14292, 17468, 18084, 26202, 27126, 39303, 52404, 54252, 54389, 78606, 108778, 157212, 163167, 217556, 326334, 489501, 598279, 652668, 979002, 1196558, 1794837, 1958004, 2393116, 3589674, 5384511, 7179348, 10769022, 21538044]

約数ペア:

[(1, 21538044), (2, 10769022), (3, 7179348), (4, 5384511), (6, 3589674), (9, 2393116), (11, 1958004), (12, 1794837), (18, 1196558), (22, 979002), (33, 652668), (36, 598279), (44, 489501), (66, 326334), (99, 217556), (132, 163167), (137, 157212), (198, 108778), (274, 78606), (396, 54389), (397, 54252), (411, 52404), (548, 39303), (794, 27126), (822, 26202), (1191, 18084), (1233, 17468), (1507, 14292), (1588, 13563), (1644, 13101), (2382, 9042), (2466, 8734), (3014, 7146), (3573, 6028), (4367, 4932), (4521, 4764)]