20815676917

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{5003}}^1$

素因数の和:5186

約数の個数: 48

約数和(自身を含む): 26355067200

約数和(自身を除く): 5539390283

約数列:

[1, 7, 19, 41, 49, 109, 133, 287, 763, 779, 931, 2009, 2071, 4469, 5003, 5341, 5453, 14497, 31283, 35021, 38171, 84911, 95057, 101479, 205123, 218981, 245147, 545327, 594377, 665399, 1435861, 3817289, 3897337, 4160639, 4657793, 10051027, 10361213, 22358407, 26721023, 27281359, 72528491, 156508849, 190969513, 424809733, 507699437, 1095561943, 2973668131, 20815676917]

約数ペア:

[(1, 20815676917), (7, 2973668131), (19, 1095561943), (41, 507699437), (49, 424809733), (109, 190969513), (133, 156508849), (287, 72528491), (763, 27281359), (779, 26721023), (931, 22358407), (2009, 10361213), (2071, 10051027), (4469, 4657793), (5003, 4160639), (5341, 3897337), (5453, 3817289), (14497, 1435861), (31283, 665399), (35021, 594377), (38171, 545327), (84911, 245147), (95057, 218981), (101479, 205123)]