19958220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{110879}}^1$

素因数の和:110894

約数の個数: 36

約数和(自身を含む): 60540480

約数和(自身を除く): 40582260

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 110879, 221758, 332637, 443516, 554395, 665274, 997911, 1108790, 1330548, 1663185, 1995822, 2217580, 3326370, 3991644, 4989555, 6652740, 9979110, 19958220]

約数ペア:

[(1, 19958220), (2, 9979110), (3, 6652740), (4, 4989555), (5, 3991644), (6, 3326370), (9, 2217580), (10, 1995822), (12, 1663185), (15, 1330548), (18, 1108790), (20, 997911), (30, 665274), (36, 554395), (45, 443516), (60, 332637), (90, 221758), (180, 110879)]