71898380

素因数分解:

$2^2\times 5^1\times {\mathrm{421}}^1\times {\mathrm{8539}}^1$

素因数の和:8969

約数の個数: 24

約数和(自身を含む): 151362960

約数和(自身を除く): 79464580

約数列:

[1, 2, 4, 5, 10, 20, 421, 842, 1684, 2105, 4210, 8420, 8539, 17078, 34156, 42695, 85390, 170780, 3594919, 7189838, 14379676, 17974595, 35949190, 71898380]

約数ペア:

[(1, 71898380), (2, 35949190), (4, 17974595), (5, 14379676), (10, 7189838), (20, 3594919), (421, 170780), (842, 85390), (1684, 42695), (2105, 34156), (4210, 17078), (8420, 8539)]