20915544

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1559}}^1$

素因数の和:1624

約数の個数: 64

約数和(自身を含む): 57657600

約数和(自身を除く): 36742056

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 43, 52, 78, 86, 104, 129, 156, 172, 258, 312, 344, 516, 559, 1032, 1118, 1559, 1677, 2236, 3118, 3354, 4472, 4677, 6236, 6708, 9354, 12472, 13416, 18708, 20267, 37416, 40534, 60801, 67037, 81068, 121602, 134074, 162136, 201111, 243204, 268148, 402222, 486408, 536296, 804444, 871481, 1608888, 1742962, 2614443, 3485924, 5228886, 6971848, 10457772, 20915544]

約数ペア:

[(1, 20915544), (2, 10457772), (3, 6971848), (4, 5228886), (6, 3485924), (8, 2614443), (12, 1742962), (13, 1608888), (24, 871481), (26, 804444), (39, 536296), (43, 486408), (52, 402222), (78, 268148), (86, 243204), (104, 201111), (129, 162136), (156, 134074), (172, 121602), (258, 81068), (312, 67037), (344, 60801), (516, 40534), (559, 37416), (1032, 20267), (1118, 18708), (1559, 13416), (1677, 12472), (2236, 9354), (3118, 6708), (3354, 6236), (4472, 4677)]