18681372

素因数分解:

$2^2\times 3^2\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{181}}^1$

素因数の和:299

約数の個数: 72

約数和(自身を含む): 49288512

約数和(自身を除く): 30607140

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 47, 61, 94, 122, 141, 181, 183, 188, 244, 282, 362, 366, 423, 543, 549, 564, 724, 732, 846, 1086, 1098, 1629, 1692, 2172, 2196, 2867, 3258, 5734, 6516, 8507, 8601, 11041, 11468, 17014, 17202, 22082, 25521, 25803, 33123, 34028, 34404, 44164, 51042, 51606, 66246, 76563, 99369, 102084, 103212, 132492, 153126, 198738, 306252, 397476, 518927, 1037854, 1556781, 2075708, 3113562, 4670343, 6227124, 9340686, 18681372]

約数ペア:

[(1, 18681372), (2, 9340686), (3, 6227124), (4, 4670343), (6, 3113562), (9, 2075708), (12, 1556781), (18, 1037854), (36, 518927), (47, 397476), (61, 306252), (94, 198738), (122, 153126), (141, 132492), (181, 103212), (183, 102084), (188, 99369), (244, 76563), (282, 66246), (362, 51606), (366, 51042), (423, 44164), (543, 34404), (549, 34028), (564, 33123), (724, 25803), (732, 25521), (846, 22082), (1086, 17202), (1098, 17014), (1629, 11468), (1692, 11041), (2172, 8601), (2196, 8507), (2867, 6516), (3258, 5734)]