19891408

素因数分解:

$2^4\times {\mathrm{421}}^1\times {\mathrm{2953}}^1$

素因数の和:3382

約数の個数: 20

約数和(自身を含む): 38644228

約数和(自身を除く): 18752820

約数列:

[1, 2, 4, 8, 16, 421, 842, 1684, 2953, 3368, 5906, 6736, 11812, 23624, 47248, 1243213, 2486426, 4972852, 9945704, 19891408]

約数ペア:

[(1, 19891408), (2, 9945704), (4, 4972852), (8, 2486426), (16, 1243213), (421, 47248), (842, 23624), (1684, 11812), (2953, 6736), (3368, 5906)]