20518218

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1$

素因数の和:169

約数の個数: 128

約数和(自身を含む): 57507840

約数和(自身を除く): 36989622

約数列:

[1, 2, 3, 6, 7, 9, 14, 17, 18, 21, 27, 31, 34, 42, 51, 54, 62, 63, 93, 102, 103, 119, 126, 153, 186, 189, 206, 217, 238, 279, 306, 309, 357, 378, 434, 459, 527, 558, 618, 651, 714, 721, 837, 918, 927, 1054, 1071, 1302, 1442, 1581, 1674, 1751, 1854, 1953, 2142, 2163, 2781, 3162, 3193, 3213, 3502, 3689, 3906, 4326, 4743, 5253, 5562, 5859, 6386, 6426, 6489, 7378, 9486, 9579, 10506, 11067, 11718, 12257, 12978, 14229, 15759, 19158, 19467, 22134, 22351, 24514, 28458, 28737, 31518, 33201, 36771, 38934, 44702, 47277, 54281, 57474, 66402, 67053, 73542, 86211, 94554, 99603, 108562, 110313, 134106, 162843, 172422, 199206, 201159, 220626, 325686, 330939, 379967, 402318, 488529, 603477, 661878, 759934, 977058, 1139901, 1206954, 1465587, 2279802, 2931174, 3419703, 6839406, 10259109, 20518218]

約数ペア:

[(1, 20518218), (2, 10259109), (3, 6839406), (6, 3419703), (7, 2931174), (9, 2279802), (14, 1465587), (17, 1206954), (18, 1139901), (21, 977058), (27, 759934), (31, 661878), (34, 603477), (42, 488529), (51, 402318), (54, 379967), (62, 330939), (63, 325686), (93, 220626), (102, 201159), (103, 199206), (119, 172422), (126, 162843), (153, 134106), (186, 110313), (189, 108562), (206, 99603), (217, 94554), (238, 86211), (279, 73542), (306, 67053), (309, 66402), (357, 57474), (378, 54281), (434, 47277), (459, 44702), (527, 38934), (558, 36771), (618, 33201), (651, 31518), (714, 28737), (721, 28458), (837, 24514), (918, 22351), (927, 22134), (1054, 19467), (1071, 19158), (1302, 15759), (1442, 14229), (1581, 12978), (1674, 12257), (1751, 11718), (1854, 11067), (1953, 10506), (2142, 9579), (2163, 9486), (2781, 7378), (3162, 6489), (3193, 6426), (3213, 6386), (3502, 5859), (3689, 5562), (3906, 5253), (4326, 4743)]