16801420

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{9439}}^1$

素因数の和:9537

約数の個数: 24

約数和(自身を含む): 35683200

約数和(自身を除く): 18881780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 9439, 18878, 37756, 47195, 94390, 188780, 840071, 1680142, 3360284, 4200355, 8400710, 16801420]

約数ペア:

[(1, 16801420), (2, 8400710), (4, 4200355), (5, 3360284), (10, 1680142), (20, 840071), (89, 188780), (178, 94390), (356, 47195), (445, 37756), (890, 18878), (1780, 9439)]