20561418

素因数分解:

$2^1\times 3^3\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{251}}^1$

素因数の和:340

約数の個数: 64

約数和(自身を含む): 48263040

約数和(自身を除く): 27701622

約数列:

[1, 2, 3, 6, 9, 18, 27, 37, 41, 54, 74, 82, 111, 123, 222, 246, 251, 333, 369, 502, 666, 738, 753, 999, 1107, 1506, 1517, 1998, 2214, 2259, 3034, 4518, 4551, 6777, 9102, 9287, 10291, 13554, 13653, 18574, 20582, 27306, 27861, 30873, 40959, 55722, 61746, 81918, 83583, 92619, 167166, 185238, 250749, 277857, 380767, 501498, 555714, 761534, 1142301, 2284602, 3426903, 6853806, 10280709, 20561418]

約数ペア:

[(1, 20561418), (2, 10280709), (3, 6853806), (6, 3426903), (9, 2284602), (18, 1142301), (27, 761534), (37, 555714), (41, 501498), (54, 380767), (74, 277857), (82, 250749), (111, 185238), (123, 167166), (222, 92619), (246, 83583), (251, 81918), (333, 61746), (369, 55722), (502, 40959), (666, 30873), (738, 27861), (753, 27306), (999, 20582), (1107, 18574), (1506, 13653), (1517, 13554), (1998, 10291), (2214, 9287), (2259, 9102), (3034, 6777), (4518, 4551)]