21503988

素因数分解:

$2^2\times 3^3\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{787}}^1$

素因数の和:834

約数の個数: 96

約数和(自身を含む): 63544320

約数和(自身を除く): 42040332

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 23, 27, 33, 36, 44, 46, 54, 66, 69, 92, 99, 108, 132, 138, 198, 207, 253, 276, 297, 396, 414, 506, 594, 621, 759, 787, 828, 1012, 1188, 1242, 1518, 1574, 2277, 2361, 2484, 3036, 3148, 4554, 4722, 6831, 7083, 8657, 9108, 9444, 13662, 14166, 17314, 18101, 21249, 25971, 27324, 28332, 34628, 36202, 42498, 51942, 54303, 72404, 77913, 84996, 103884, 108606, 155826, 162909, 199111, 217212, 233739, 311652, 325818, 398222, 467478, 488727, 597333, 651636, 796444, 934956, 977454, 1194666, 1791999, 1954908, 2389332, 3583998, 5375997, 7167996, 10751994, 21503988]

約数ペア:

[(1, 21503988), (2, 10751994), (3, 7167996), (4, 5375997), (6, 3583998), (9, 2389332), (11, 1954908), (12, 1791999), (18, 1194666), (22, 977454), (23, 934956), (27, 796444), (33, 651636), (36, 597333), (44, 488727), (46, 467478), (54, 398222), (66, 325818), (69, 311652), (92, 233739), (99, 217212), (108, 199111), (132, 162909), (138, 155826), (198, 108606), (207, 103884), (253, 84996), (276, 77913), (297, 72404), (396, 54303), (414, 51942), (506, 42498), (594, 36202), (621, 34628), (759, 28332), (787, 27324), (828, 25971), (1012, 21249), (1188, 18101), (1242, 17314), (1518, 14166), (1574, 13662), (2277, 9444), (2361, 9108), (2484, 8657), (3036, 7083), (3148, 6831), (4554, 4722)]