21521.000000

素因数分解:

$2^2\times 3^3\times {\mathrm{47}}^1\times {\mathrm{181}}^1$

素因数の和:241

約数の個数: 48

約数和(自身を含む): 2446080

約数和(自身を除く): 1527324

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 47, 54, 94, 108, 141, 181, 188, 282, 362, 423, 543, 564, 724, 846, 1086, 1269, 1629, 1692, 2172, 2538, 3258, 4887, 5076, 6516, 8507, 9774, 17014, 19548, 25521, 34028, 51042, 76563, 102084, 153126, 229689, 306252, 459378, 918756]

約数ペア:

[(1, 918756), (2, 459378), (3, 306252), (4, 229689), (6, 153126), (9, 102084), (12, 76563), (18, 51042), (27, 34028), (36, 25521), (47, 19548), (54, 17014), (94, 9774), (108, 8507), (141, 6516), (181, 5076), (188, 4887), (282, 3258), (362, 2538), (423, 2172), (543, 1692), (564, 1629), (724, 1269), (846, 1086)]