20398806

素因数分解:

$2^1\times 3^2\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{263}}^1$

素因数の和:441

約数の個数: 48

約数和(自身を含む): 46126080

約数和(自身を除く): 25727274

約数列:

[1, 2, 3, 6, 9, 18, 31, 62, 93, 139, 186, 263, 278, 279, 417, 526, 558, 789, 834, 1251, 1578, 2367, 2502, 4309, 4734, 8153, 8618, 12927, 16306, 24459, 25854, 36557, 38781, 48918, 73114, 73377, 77562, 109671, 146754, 219342, 329013, 658026, 1133267, 2266534, 3399801, 6799602, 10199403, 20398806]

約数ペア:

[(1, 20398806), (2, 10199403), (3, 6799602), (6, 3399801), (9, 2266534), (18, 1133267), (31, 658026), (62, 329013), (93, 219342), (139, 146754), (186, 109671), (263, 77562), (278, 73377), (279, 73114), (417, 48918), (526, 38781), (558, 36557), (789, 25854), (834, 24459), (1251, 16306), (1578, 12927), (2367, 8618), (2502, 8153), (4309, 4734)]