21029955

素因数分解:

$3^1\times 5^1\times {\mathrm{809}}^1\times {\mathrm{1733}}^1$

素因数の和:2550

約数の個数: 16

約数和(自身を含む): 33708960

約数和(自身を除く): 12679005

約数列:

[1, 3, 5, 15, 809, 1733, 2427, 4045, 5199, 8665, 12135, 25995, 1401997, 4205991, 7009985, 21029955]

約数ペア:

[(1, 21029955), (3, 7009985), (5, 4205991), (15, 1401997), (809, 25995), (1733, 12135), (2427, 8665), (4045, 5199)]