21041839

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{7459}}^1$

素因数の和:7510

約数の個数: 16

約数和(自身を含む): 26736640

約数和(自身を除く): 5694801

約数列:

[1, 7, 13, 31, 91, 217, 403, 2821, 7459, 52213, 96967, 231229, 678769, 1618603, 3005977, 21041839]

約数ペア:

[(1, 21041839), (7, 3005977), (13, 1618603), (31, 678769), (91, 231229), (217, 96967), (403, 52213), (2821, 7459)]