21998420

素因数分解:

$2^2\times 5^1\times {\mathrm{757}}^1\times {\mathrm{1453}}^1$

素因数の和:2219

約数の個数: 24

約数和(自身を含む): 46289544

約数和(自身を除く): 24291124

約数列:

[1, 2, 4, 5, 10, 20, 757, 1453, 1514, 2906, 3028, 3785, 5812, 7265, 7570, 14530, 15140, 29060, 1099921, 2199842, 4399684, 5499605, 10999210, 21998420]

約数ペア:

[(1, 21998420), (2, 10999210), (4, 5499605), (5, 4399684), (10, 2199842), (20, 1099921), (757, 29060), (1453, 15140), (1514, 14530), (2906, 7570), (3028, 7265), (3785, 5812)]