18699850

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^2\times {\mathrm{2213}}^1$

素因数の和:2251

約数の個数: 36

約数和(自身を含む): 37680066

約数和(自身を除く): 18980216

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 169, 325, 338, 650, 845, 1690, 2213, 4225, 4426, 8450, 11065, 22130, 28769, 55325, 57538, 110650, 143845, 287690, 373997, 719225, 747994, 1438450, 1869985, 3739970, 9349925, 18699850]

約数ペア:

[(1, 18699850), (2, 9349925), (5, 3739970), (10, 1869985), (13, 1438450), (25, 747994), (26, 719225), (50, 373997), (65, 287690), (130, 143845), (169, 110650), (325, 57538), (338, 55325), (650, 28769), (845, 22130), (1690, 11065), (2213, 8450), (4225, 4426)]