21374815

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{941}}^1$

素因数の和:1023

約数の個数: 32

約数和(自身を含む): 32555520

約数和(自身を除く): 11180705

約数列:

[1, 5, 7, 11, 35, 55, 59, 77, 295, 385, 413, 649, 941, 2065, 3245, 4543, 4705, 6587, 10351, 22715, 32935, 51755, 55519, 72457, 277595, 362285, 388633, 610709, 1943165, 3053545, 4274963, 21374815]

約数ペア:

[(1, 21374815), (5, 4274963), (7, 3053545), (11, 1943165), (35, 610709), (55, 388633), (59, 362285), (77, 277595), (295, 72457), (385, 55519), (413, 51755), (649, 32935), (941, 22715), (2065, 10351), (3245, 6587), (4543, 4705)]