20548353

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1\times {\mathrm{191}}^1$

素因数の和:357

約数の個数: 32

約数和(自身を含む): 32440320

約数和(自身を除く): 11891967

約数列:

[1, 3, 7, 21, 47, 109, 141, 191, 327, 329, 573, 763, 987, 1337, 2289, 4011, 5123, 8977, 15369, 20819, 26931, 35861, 62457, 62839, 107583, 145733, 188517, 437199, 978493, 2935479, 6849451, 20548353]

約数ペア:

[(1, 20548353), (3, 6849451), (7, 2935479), (21, 978493), (47, 437199), (109, 188517), (141, 145733), (191, 107583), (327, 62839), (329, 62457), (573, 35861), (763, 26931), (987, 20819), (1337, 15369), (2289, 8977), (4011, 5123)]