21761490

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{421}}^1\times {\mathrm{1723}}^1$

素因数の和:2154

約数の個数: 32

約数和(自身を含む): 52382016

約数和(自身を除く): 30620526

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 421, 842, 1263, 1723, 2105, 2526, 3446, 4210, 5169, 6315, 8615, 10338, 12630, 17230, 25845, 51690, 725383, 1450766, 2176149, 3626915, 4352298, 7253830, 10880745, 21761490]

約数ペア:

[(1, 21761490), (2, 10880745), (3, 7253830), (5, 4352298), (6, 3626915), (10, 2176149), (15, 1450766), (30, 725383), (421, 51690), (842, 25845), (1263, 17230), (1723, 12630), (2105, 10338), (2526, 8615), (3446, 6315), (4210, 5169)]