20784419708

素因数分解:

$2^2\times {\mathrm{13}}^3\times {\mathrm{17}}^1\times {\mathrm{139123}}^1$

素因数の和:139183

約数の個数: 48

約数和(自身を含む): 41720505120

約数和(自身を除く): 20936085412

約数列:

[1, 2, 4, 13, 17, 26, 34, 52, 68, 169, 221, 338, 442, 676, 884, 2197, 2873, 4394, 5746, 8788, 11492, 37349, 74698, 139123, 149396, 278246, 556492, 1808599, 2365091, 3617198, 4730182, 7234396, 9460364, 23511787, 30746183, 47023574, 61492366, 94047148, 122984732, 305653231, 399700379, 611306462, 799400758, 1222612924, 1598801516, 5196104927, 10392209854, 20784419708]

約数ペア:

[(1, 20784419708), (2, 10392209854), (4, 5196104927), (13, 1598801516), (17, 1222612924), (26, 799400758), (34, 611306462), (52, 399700379), (68, 305653231), (169, 122984732), (221, 94047148), (338, 61492366), (442, 47023574), (676, 30746183), (884, 23511787), (2197, 9460364), (2873, 7234396), (4394, 4730182), (5746, 3617198), (8788, 2365091), (11492, 1808599), (37349, 556492), (74698, 278246), (139123, 149396)]