20809854

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{787}}^1$

素因数の和:921

約数の個数: 48

約数和(自身を含む): 49048272

約数和(自身を除く): 28238418

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 113, 117, 226, 234, 339, 678, 787, 1017, 1469, 1574, 2034, 2361, 2938, 4407, 4722, 7083, 8814, 10231, 13221, 14166, 20462, 26442, 30693, 61386, 88931, 92079, 177862, 184158, 266793, 533586, 800379, 1156103, 1600758, 2312206, 3468309, 6936618, 10404927, 20809854]

約数ペア:

[(1, 20809854), (2, 10404927), (3, 6936618), (6, 3468309), (9, 2312206), (13, 1600758), (18, 1156103), (26, 800379), (39, 533586), (78, 266793), (113, 184158), (117, 177862), (226, 92079), (234, 88931), (339, 61386), (678, 30693), (787, 26442), (1017, 20462), (1469, 14166), (1574, 13221), (2034, 10231), (2361, 8814), (2938, 7083), (4407, 4722)]