20993518

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{467}}^1$

素因数の和:521

約数の個数: 48

約数和(自身を含む): 41109120

約数和(自身を除く): 20115602

約数列:

[1, 2, 7, 13, 14, 19, 26, 38, 91, 133, 169, 182, 247, 266, 338, 467, 494, 934, 1183, 1729, 2366, 3211, 3269, 3458, 6071, 6422, 6538, 8873, 12142, 17746, 22477, 42497, 44954, 62111, 78923, 84994, 115349, 124222, 157846, 230698, 552461, 807443, 1104922, 1499537, 1614886, 2999074, 10496759, 20993518]

約数ペア:

[(1, 20993518), (2, 10496759), (7, 2999074), (13, 1614886), (14, 1499537), (19, 1104922), (26, 807443), (38, 552461), (91, 230698), (133, 157846), (169, 124222), (182, 115349), (247, 84994), (266, 78923), (338, 62111), (467, 44954), (494, 42497), (934, 22477), (1183, 17746), (1729, 12142), (2366, 8873), (3211, 6538), (3269, 6422), (3458, 6071)]