19981245

素因数分解:

$3^1\times 5^1\times {\mathrm{491}}^1\times {\mathrm{2713}}^1$

素因数の和:3212

約数の個数: 16

約数和(自身を含む): 32046912

約数和(自身を除く): 12065667

約数列:

[1, 3, 5, 15, 491, 1473, 2455, 2713, 7365, 8139, 13565, 40695, 1332083, 3996249, 6660415, 19981245]

約数ペア:

[(1, 19981245), (3, 6660415), (5, 3996249), (15, 1332083), (491, 40695), (1473, 13565), (2455, 8139), (2713, 7365)]