21108015

素因数分解:

$3^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{7001}}^1$

素因数の和:7079

約数の個数: 24

約数和(自身を含む): 37138608

約数和(自身を除く): 16030593

約数列:

[1, 3, 5, 9, 15, 45, 67, 201, 335, 603, 1005, 3015, 7001, 21003, 35005, 63009, 105015, 315045, 469067, 1407201, 2345335, 4221603, 7036005, 21108015]

約数ペア:

[(1, 21108015), (3, 7036005), (5, 4221603), (9, 2345335), (15, 1407201), (45, 469067), (67, 315045), (201, 105015), (335, 63009), (603, 35005), (1005, 21003), (3015, 7001)]