21040968

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{3967}}^1$

素因数の和:4006

約数の個数: 64

約数和(自身を含む): 59996160

約数和(自身を除く): 38955192

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 17, 24, 26, 34, 39, 51, 52, 68, 78, 102, 104, 136, 156, 204, 221, 312, 408, 442, 663, 884, 1326, 1768, 2652, 3967, 5304, 7934, 11901, 15868, 23802, 31736, 47604, 51571, 67439, 95208, 103142, 134878, 154713, 202317, 206284, 269756, 309426, 404634, 412568, 539512, 618852, 809268, 876707, 1237704, 1618536, 1753414, 2630121, 3506828, 5260242, 7013656, 10520484, 21040968]

約数ペア:

[(1, 21040968), (2, 10520484), (3, 7013656), (4, 5260242), (6, 3506828), (8, 2630121), (12, 1753414), (13, 1618536), (17, 1237704), (24, 876707), (26, 809268), (34, 618852), (39, 539512), (51, 412568), (52, 404634), (68, 309426), (78, 269756), (102, 206284), (104, 202317), (136, 154713), (156, 134878), (204, 103142), (221, 95208), (312, 67439), (408, 51571), (442, 47604), (663, 31736), (884, 23802), (1326, 15868), (1768, 11901), (2652, 7934), (3967, 5304)]