1320779997

素因数分解:

$3^2\times {\mathrm{17}}^2\times {\mathrm{507797}}^1$

素因数の和:507837

約数の個数: 18

約数和(自身を含む): 2026621818

約数和(自身を除く): 705841821

約数列:

[1, 3, 9, 17, 51, 153, 289, 867, 2601, 507797, 1523391, 4570173, 8632549, 25897647, 77692941, 146753333, 440259999, 1320779997]

約数ペア:

[(1, 1320779997), (3, 440259999), (9, 146753333), (17, 77692941), (51, 25897647), (153, 8632549), (289, 4570173), (867, 1523391), (2601, 507797)]