20307352

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{239}}^1$

素因数の和:320

約数の個数: 64

約数和(自身を含む): 44352000

約数和(自身を除く): 24044648

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 43, 52, 76, 86, 104, 152, 172, 239, 247, 344, 478, 494, 559, 817, 956, 988, 1118, 1634, 1912, 1976, 2236, 3107, 3268, 4472, 4541, 6214, 6536, 9082, 10277, 10621, 12428, 18164, 20554, 21242, 24856, 36328, 41108, 42484, 59033, 82216, 84968, 118066, 133601, 195263, 236132, 267202, 390526, 472264, 534404, 781052, 1068808, 1562104, 2538419, 5076838, 10153676, 20307352]

約数ペア:

[(1, 20307352), (2, 10153676), (4, 5076838), (8, 2538419), (13, 1562104), (19, 1068808), (26, 781052), (38, 534404), (43, 472264), (52, 390526), (76, 267202), (86, 236132), (104, 195263), (152, 133601), (172, 118066), (239, 84968), (247, 82216), (344, 59033), (478, 42484), (494, 41108), (559, 36328), (817, 24856), (956, 21242), (988, 20554), (1118, 18164), (1634, 12428), (1912, 10621), (1976, 10277), (2236, 9082), (3107, 6536), (3268, 6214), (4472, 4541)]