21393590

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{73771}}^1$

素因数の和:73807

約数の個数: 16

約数和(自身を含む): 39836880

約数和(自身を除く): 18443290

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 73771, 147542, 368855, 737710, 2139359, 4278718, 10696795, 21393590]

約数ペア:

[(1, 21393590), (2, 10696795), (5, 4278718), (10, 2139359), (29, 737710), (58, 368855), (145, 147542), (290, 73771)]