20538648

素因数分解:

$2^3\times 3^2\times {\mathrm{13}}^1\times {\mathrm{21943}}^1$

素因数の和:21968

約数の個数: 48

約数和(自身を含む): 59907120

約数和(自身を除く): 39368472

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 24, 26, 36, 39, 52, 72, 78, 104, 117, 156, 234, 312, 468, 936, 21943, 43886, 65829, 87772, 131658, 175544, 197487, 263316, 285259, 394974, 526632, 570518, 789948, 855777, 1141036, 1579896, 1711554, 2282072, 2567331, 3423108, 5134662, 6846216, 10269324, 20538648]

約数ペア:

[(1, 20538648), (2, 10269324), (3, 6846216), (4, 5134662), (6, 3423108), (8, 2567331), (9, 2282072), (12, 1711554), (13, 1579896), (18, 1141036), (24, 855777), (26, 789948), (36, 570518), (39, 526632), (52, 394974), (72, 285259), (78, 263316), (104, 197487), (117, 175544), (156, 131658), (234, 87772), (312, 65829), (468, 43886), (936, 21943)]