20800026

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{863}}^1$

素因数の和:987

約数の個数: 48

約数和(自身を含む): 49061376

約数和(自身を除く): 28261350

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 103, 117, 206, 234, 309, 618, 863, 927, 1339, 1726, 1854, 2589, 2678, 4017, 5178, 7767, 8034, 11219, 12051, 15534, 22438, 24102, 33657, 67314, 88889, 100971, 177778, 201942, 266667, 533334, 800001, 1155557, 1600002, 2311114, 3466671, 6933342, 10400013, 20800026]

約数ペア:

[(1, 20800026), (2, 10400013), (3, 6933342), (6, 3466671), (9, 2311114), (13, 1600002), (18, 1155557), (26, 800001), (39, 533334), (78, 266667), (103, 201942), (117, 177778), (206, 100971), (234, 88889), (309, 67314), (618, 33657), (863, 24102), (927, 22438), (1339, 15534), (1726, 12051), (1854, 11219), (2589, 8034), (2678, 7767), (4017, 5178)]