21284695

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{181}}^1\times {\mathrm{811}}^1$

素因数の和:1026

約数の個数: 16

約数和(自身を含む): 26601120

約数和(自身を除く): 5316425

約数列:

[1, 5, 29, 145, 181, 811, 905, 4055, 5249, 23519, 26245, 117595, 146791, 733955, 4256939, 21284695]

約数ペア:

[(1, 21284695), (5, 4256939), (29, 733955), (145, 146791), (181, 117595), (811, 26245), (905, 23519), (4055, 5249)]