18981490

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{4013}}^1$

素因数の和:4074

約数の個数: 32

約数和(自身を含む): 38149056

約数和(自身を除く): 19167566

約数列:

[1, 2, 5, 10, 11, 22, 43, 55, 86, 110, 215, 430, 473, 946, 2365, 4013, 4730, 8026, 20065, 40130, 44143, 88286, 172559, 220715, 345118, 441430, 862795, 1725590, 1898149, 3796298, 9490745, 18981490]

約数ペア:

[(1, 18981490), (2, 9490745), (5, 3796298), (10, 1898149), (11, 1725590), (22, 862795), (43, 441430), (55, 345118), (86, 220715), (110, 172559), (215, 88286), (430, 44143), (473, 40130), (946, 20065), (2365, 8026), (4013, 4730)]