81218990

素因数分解:

$2^1\times 5^1\times {\mathrm{619}}^1\times {\mathrm{13121}}^1$

素因数の和:13747

約数の個数: 16

約数和(自身を含む): 146441520

約数和(自身を除く): 65222530

約数列:

[1, 2, 5, 10, 619, 1238, 3095, 6190, 13121, 26242, 65605, 131210, 8121899, 16243798, 40609495, 81218990]

約数ペア:

[(1, 81218990), (2, 40609495), (5, 16243798), (10, 8121899), (619, 131210), (1238, 65605), (3095, 26242), (6190, 13121)]