20428218

素因数分解:

$2^1\times 3^2\times {\mathrm{37}}^2\times {\mathrm{829}}^1$

素因数の和:911

約数の個数: 36

約数和(自身を含む): 45544590

約数和(自身を除く): 25116372

約数列:

[1, 2, 3, 6, 9, 18, 37, 74, 111, 222, 333, 666, 829, 1369, 1658, 2487, 2738, 4107, 4974, 7461, 8214, 12321, 14922, 24642, 30673, 61346, 92019, 184038, 276057, 552114, 1134901, 2269802, 3404703, 6809406, 10214109, 20428218]

約数ペア:

[(1, 20428218), (2, 10214109), (3, 6809406), (6, 3404703), (9, 2269802), (18, 1134901), (37, 552114), (74, 276057), (111, 184038), (222, 92019), (333, 61346), (666, 30673), (829, 24642), (1369, 14922), (1658, 12321), (2487, 8214), (2738, 7461), (4107, 4974)]