19788390

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{219871}}^1$

素因数の和:219884

約数の個数: 24

約数和(自身を含む): 51450048

約数和(自身を除く): 31661658

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 219871, 439742, 659613, 1099355, 1319226, 1978839, 2198710, 3298065, 3957678, 6596130, 9894195, 19788390]

約数ペア:

[(1, 19788390), (2, 9894195), (3, 6596130), (5, 3957678), (6, 3298065), (9, 2198710), (10, 1978839), (15, 1319226), (18, 1099355), (30, 659613), (45, 439742), (90, 219871)]