19981611

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{2549}}^1$

素因数の和:2635

約数の個数: 24

約数和(自身を含む): 31558800

約数和(自身を除く): 11577189

約数列:

[1, 3, 9, 13, 39, 67, 117, 201, 603, 871, 2549, 2613, 7647, 7839, 22941, 33137, 99411, 170783, 298233, 512349, 1537047, 2220179, 6660537, 19981611]

約数ペア:

[(1, 19981611), (3, 6660537), (9, 2220179), (13, 1537047), (39, 512349), (67, 298233), (117, 170783), (201, 99411), (603, 33137), (871, 22941), (2549, 7839), (2613, 7647)]