81225715

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1\times {\mathrm{3923}}^1$

素因数の和:4070

約数の個数: 16

約数和(自身を含む): 100862496

約数和(自身を除く): 19636781

約数列:

[1, 5, 41, 101, 205, 505, 3923, 4141, 19615, 20705, 160843, 396223, 804215, 1981115, 16245143, 81225715]

約数ペア:

[(1, 81225715), (5, 16245143), (41, 1981115), (101, 804215), (205, 396223), (505, 160843), (3923, 20705), (4141, 19615)]