20718056104

素因数分解:

$2^3\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{971}}^1\times {\mathrm{1901}}^1$

素因数の和:2962

約数の個数: 64

約数和(自身を含む): 41263966080

約数和(自身を除く): 20545909976

約数列:

[1, 2, 4, 8, 23, 46, 61, 92, 122, 184, 244, 488, 971, 1403, 1901, 1942, 2806, 3802, 3884, 5612, 7604, 7768, 11224, 15208, 22333, 43723, 44666, 59231, 87446, 89332, 115961, 118462, 174892, 178664, 231922, 236924, 349784, 463844, 473848, 927688, 1362313, 1845871, 2667103, 2724626, 3691742, 5334206, 5449252, 7383484, 10668412, 10898504, 14766968, 21336824, 42455033, 84910066, 112598131, 169820132, 225196262, 339640264, 450392524, 900785048, 2589757013, 5179514026, 10359028052, 20718056104]

約数ペア:

[(1, 20718056104), (2, 10359028052), (4, 5179514026), (8, 2589757013), (23, 900785048), (46, 450392524), (61, 339640264), (92, 225196262), (122, 169820132), (184, 112598131), (244, 84910066), (488, 42455033), (971, 21336824), (1403, 14766968), (1901, 10898504), (1942, 10668412), (2806, 7383484), (3802, 5449252), (3884, 5334206), (5612, 3691742), (7604, 2724626), (7768, 2667103), (11224, 1845871), (15208, 1362313), (22333, 927688), (43723, 473848), (44666, 463844), (59231, 349784), (87446, 236924), (89332, 231922), (115961, 178664), (118462, 174892)]