18921255

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{74201}}^1$

素因数の和:74226

約数の個数: 16

約数和(自身を含む): 32055264

約数和(自身を除く): 13134009

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 74201, 222603, 371005, 1113015, 1261417, 3784251, 6307085, 18921255]

約数ペア:

[(1, 18921255), (3, 6307085), (5, 3784251), (15, 1261417), (17, 1113015), (51, 371005), (85, 222603), (255, 74201)]