21036715

素因数分解:

$5^1\times 7^1\times {\mathrm{619}}^1\times {\mathrm{971}}^1$

素因数の和:1602

約数の個数: 16

約数和(自身を含む): 28926720

約数和(自身を除く): 7890005

約数列:

[1, 5, 7, 35, 619, 971, 3095, 4333, 4855, 6797, 21665, 33985, 601049, 3005245, 4207343, 21036715]

約数ペア:

[(1, 21036715), (5, 4207343), (7, 3005245), (35, 601049), (619, 33985), (971, 21665), (3095, 6797), (4333, 4855)]