21131388

素因数分解:

$2^2\times 3^3\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{181}}^1$

素因数の和:264

約数の個数: 96

約数和(自身を含む): 58705920

約数和(自身を除く): 37574532

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 23, 27, 36, 46, 47, 54, 69, 92, 94, 108, 138, 141, 181, 188, 207, 276, 282, 362, 414, 423, 543, 564, 621, 724, 828, 846, 1081, 1086, 1242, 1269, 1629, 1692, 2162, 2172, 2484, 2538, 3243, 3258, 4163, 4324, 4887, 5076, 6486, 6516, 8326, 8507, 9729, 9774, 12489, 12972, 16652, 17014, 19458, 19548, 24978, 25521, 29187, 34028, 37467, 38916, 49956, 51042, 58374, 74934, 76563, 102084, 112401, 116748, 149868, 153126, 195661, 224802, 229689, 306252, 391322, 449604, 459378, 586983, 782644, 918756, 1173966, 1760949, 2347932, 3521898, 5282847, 7043796, 10565694, 21131388]

約数ペア:

[(1, 21131388), (2, 10565694), (3, 7043796), (4, 5282847), (6, 3521898), (9, 2347932), (12, 1760949), (18, 1173966), (23, 918756), (27, 782644), (36, 586983), (46, 459378), (47, 449604), (54, 391322), (69, 306252), (92, 229689), (94, 224802), (108, 195661), (138, 153126), (141, 149868), (181, 116748), (188, 112401), (207, 102084), (276, 76563), (282, 74934), (362, 58374), (414, 51042), (423, 49956), (543, 38916), (564, 37467), (621, 34028), (724, 29187), (828, 25521), (846, 24978), (1081, 19548), (1086, 19458), (1242, 17014), (1269, 16652), (1629, 12972), (1692, 12489), (2162, 9774), (2172, 9729), (2484, 8507), (2538, 8326), (3243, 6516), (3258, 6486), (4163, 5076), (4324, 4887)]