18981962

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{191}}^1$

素因数の和:326

約数の個数: 32

約数和(自身を含む): 31518720

約数和(自身を除く): 12536758

約数列:

[1, 2, 17, 34, 37, 74, 79, 158, 191, 382, 629, 1258, 1343, 2686, 2923, 3247, 5846, 6494, 7067, 14134, 15089, 30178, 49691, 99382, 120139, 240278, 256513, 513026, 558293, 1116586, 9490981, 18981962]

約数ペア:

[(1, 18981962), (2, 9490981), (17, 1116586), (34, 558293), (37, 513026), (74, 256513), (79, 240278), (158, 120139), (191, 99382), (382, 49691), (629, 30178), (1258, 15089), (1343, 14134), (2686, 7067), (2923, 6494), (3247, 5846)]