17990986

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{461}}^1$

素因数の和:574

約数の個数: 32

約数和(自身を含む): 31046400

約数和(自身を除く): 13055414

約数列:

[1, 2, 13, 19, 26, 38, 79, 158, 247, 461, 494, 922, 1027, 1501, 2054, 3002, 5993, 8759, 11986, 17518, 19513, 36419, 39026, 72838, 113867, 227734, 473447, 691961, 946894, 1383922, 8995493, 17990986]

約数ペア:

[(1, 17990986), (2, 8995493), (13, 1383922), (19, 946894), (26, 691961), (38, 473447), (79, 227734), (158, 113867), (247, 72838), (461, 39026), (494, 36419), (922, 19513), (1027, 17518), (1501, 11986), (2054, 8759), (3002, 5993)]