251687916

素因数分解:

$2^2\times 3^2\times {\mathrm{103}}^2\times {\mathrm{659}}^1$

素因数の和:875

約数の個数: 54

約数和(自身を含む): 643422780

約数和(自身を除く): 391734864

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 103, 206, 309, 412, 618, 659, 927, 1236, 1318, 1854, 1977, 2636, 3708, 3954, 5931, 7908, 10609, 11862, 21218, 23724, 31827, 42436, 63654, 67877, 95481, 127308, 135754, 190962, 203631, 271508, 381924, 407262, 610893, 814524, 1221786, 2443572, 6991331, 13982662, 20973993, 27965324, 41947986, 62921979, 83895972, 125843958, 251687916]

約数ペア:

[(1, 251687916), (2, 125843958), (3, 83895972), (4, 62921979), (6, 41947986), (9, 27965324), (12, 20973993), (18, 13982662), (36, 6991331), (103, 2443572), (206, 1221786), (309, 814524), (412, 610893), (618, 407262), (659, 381924), (927, 271508), (1236, 203631), (1318, 190962), (1854, 135754), (1977, 127308), (2636, 95481), (3708, 67877), (3954, 63654), (5931, 42436), (7908, 31827), (10609, 23724), (11862, 21218)]