19739960

素因数分解:

$2^3\times 5^1\times {\mathrm{223}}^1\times {\mathrm{2213}}^1$

素因数の和:2447

約数の個数: 32

約数和(自身を含む): 44634240

約数和(自身を除く): 24894280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 223, 446, 892, 1115, 1784, 2213, 2230, 4426, 4460, 8852, 8920, 11065, 17704, 22130, 44260, 88520, 493499, 986998, 1973996, 2467495, 3947992, 4934990, 9869980, 19739960]

約数ペア:

[(1, 19739960), (2, 9869980), (4, 4934990), (5, 3947992), (8, 2467495), (10, 1973996), (20, 986998), (40, 493499), (223, 88520), (446, 44260), (892, 22130), (1115, 17704), (1784, 11065), (2213, 8920), (2230, 8852), (4426, 4460)]