20741868

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{1553}}^1$

素因数の和:1623

約数の個数: 72

約数和(自身を含む): 61090848

約数和(自身を除く): 40348980

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 53, 63, 84, 106, 126, 159, 212, 252, 318, 371, 477, 636, 742, 954, 1113, 1484, 1553, 1908, 2226, 3106, 3339, 4452, 4659, 6212, 6678, 9318, 10871, 13356, 13977, 18636, 21742, 27954, 32613, 43484, 55908, 65226, 82309, 97839, 130452, 164618, 195678, 246927, 329236, 391356, 493854, 576163, 740781, 987708, 1152326, 1481562, 1728489, 2304652, 2963124, 3456978, 5185467, 6913956, 10370934, 20741868]

約数ペア:

[(1, 20741868), (2, 10370934), (3, 6913956), (4, 5185467), (6, 3456978), (7, 2963124), (9, 2304652), (12, 1728489), (14, 1481562), (18, 1152326), (21, 987708), (28, 740781), (36, 576163), (42, 493854), (53, 391356), (63, 329236), (84, 246927), (106, 195678), (126, 164618), (159, 130452), (212, 97839), (252, 82309), (318, 65226), (371, 55908), (477, 43484), (636, 32613), (742, 27954), (954, 21742), (1113, 18636), (1484, 13977), (1553, 13356), (1908, 10871), (2226, 9318), (3106, 6678), (3339, 6212), (4452, 4659)]