19531990

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{47639}}^1$

素因数の和:47687

約数の個数: 16

約数和(自身を含む): 36015840

約数和(自身を除く): 16483850

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 47639, 95278, 238195, 476390, 1953199, 3906398, 9765995, 19531990]

約数ペア:

[(1, 19531990), (2, 9765995), (5, 3906398), (10, 1953199), (41, 476390), (82, 238195), (205, 95278), (410, 47639)]