20790081

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{971}}^1$

素因数の和:1054

約数の個数: 32

約数和(自身を含む): 33747840

約数和(自身を除く): 12957759

約数列:

[1, 3, 9, 13, 27, 39, 61, 117, 183, 351, 549, 793, 971, 1647, 2379, 2913, 7137, 8739, 12623, 21411, 26217, 37869, 59231, 113607, 177693, 340821, 533079, 770003, 1599237, 2310009, 6930027, 20790081]

約数ペア:

[(1, 20790081), (3, 6930027), (9, 2310009), (13, 1599237), (27, 770003), (39, 533079), (61, 340821), (117, 177693), (183, 113607), (351, 59231), (549, 37869), (793, 26217), (971, 21411), (1647, 12623), (2379, 8739), (2913, 7137)]