21801880

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{14731}}^1$

素因数の和:14779

約数の個数: 32

約数和(自身を含む): 50383440

約数和(自身を除く): 28581560

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 740, 1480, 14731, 29462, 58924, 73655, 117848, 147310, 294620, 545047, 589240, 1090094, 2180188, 2725235, 4360376, 5450470, 10900940, 21801880]

約数ペア:

[(1, 21801880), (2, 10900940), (4, 5450470), (5, 4360376), (8, 2725235), (10, 2180188), (20, 1090094), (37, 589240), (40, 545047), (74, 294620), (148, 147310), (185, 117848), (296, 73655), (370, 58924), (740, 29462), (1480, 14731)]