20199978

素因数分解:

$2^1\times 3^2\times {\mathrm{17}}^1\times {\mathrm{251}}^1\times {\mathrm{263}}^1$

素因数の和:539

約数の個数: 48

約数和(自身を含む): 46702656

約数和(自身を除く): 26502678

約数列:

[1, 2, 3, 6, 9, 17, 18, 34, 51, 102, 153, 251, 263, 306, 502, 526, 753, 789, 1506, 1578, 2259, 2367, 4267, 4471, 4518, 4734, 8534, 8942, 12801, 13413, 25602, 26826, 38403, 40239, 66013, 76806, 80478, 132026, 198039, 396078, 594117, 1122221, 1188234, 2244442, 3366663, 6733326, 10099989, 20199978]

約数ペア:

[(1, 20199978), (2, 10099989), (3, 6733326), (6, 3366663), (9, 2244442), (17, 1188234), (18, 1122221), (34, 594117), (51, 396078), (102, 198039), (153, 132026), (251, 80478), (263, 76806), (306, 66013), (502, 40239), (526, 38403), (753, 26826), (789, 25602), (1506, 13413), (1578, 12801), (2259, 8942), (2367, 8534), (4267, 4734), (4471, 4518)]