21049505

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{179}}^1\times {\mathrm{811}}^1$

素因数の和:1024

約数の個数: 16

約数和(自身を含む): 26308800

約数和(自身を除く): 5259295

約数列:

[1, 5, 29, 145, 179, 811, 895, 4055, 5191, 23519, 25955, 117595, 145169, 725845, 4209901, 21049505]

約数ペア:

[(1, 21049505), (5, 4209901), (29, 725845), (145, 145169), (179, 117595), (811, 25955), (895, 23519), (4055, 5191)]