21919140

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{40591}}^1$

素因数の和:40609

約数の個数: 48

約数和(自身を含む): 68194560

約数和(自身を除く): 46275420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270, 540, 40591, 81182, 121773, 162364, 202955, 243546, 365319, 405910, 487092, 608865, 730638, 811820, 1095957, 1217730, 1461276, 1826595, 2191914, 2435460, 3653190, 4383828, 5479785, 7306380, 10959570, 21919140]

約数ペア:

[(1, 21919140), (2, 10959570), (3, 7306380), (4, 5479785), (5, 4383828), (6, 3653190), (9, 2435460), (10, 2191914), (12, 1826595), (15, 1461276), (18, 1217730), (20, 1095957), (27, 811820), (30, 730638), (36, 608865), (45, 487092), (54, 405910), (60, 365319), (90, 243546), (108, 202955), (135, 162364), (180, 121773), (270, 81182), (540, 40591)]