21072015

素因数分解:

$3^3\times 5^1\times {\mathrm{156089}}^1$

素因数の和:156103

約数の個数: 16

約数和(自身を含む): 37461600

約数和(自身を除く): 16389585

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 156089, 468267, 780445, 1404801, 2341335, 4214403, 7024005, 21072015]

約数ペア:

[(1, 21072015), (3, 7024005), (5, 4214403), (9, 2341335), (15, 1404801), (27, 780445), (45, 468267), (135, 156089)]