20408206

素因数分解:

$2^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{193}}^1$

素因数の和:305

約数の個数: 48

約数和(自身を含む): 39012624

約数和(自身を除く): 18604418

約数列:

[1, 2, 7, 13, 14, 26, 49, 83, 91, 98, 166, 182, 193, 386, 581, 637, 1079, 1162, 1274, 1351, 2158, 2509, 2702, 4067, 5018, 7553, 8134, 9457, 15106, 16019, 17563, 18914, 32038, 35126, 52871, 105742, 112133, 122941, 208247, 224266, 245882, 416494, 784931, 1457729, 1569862, 2915458, 10204103, 20408206]

約数ペア:

[(1, 20408206), (2, 10204103), (7, 2915458), (13, 1569862), (14, 1457729), (26, 784931), (49, 416494), (83, 245882), (91, 224266), (98, 208247), (166, 122941), (182, 112133), (193, 105742), (386, 52871), (581, 35126), (637, 32038), (1079, 18914), (1162, 17563), (1274, 16019), (1351, 15106), (2158, 9457), (2509, 8134), (2702, 7553), (4067, 5018)]