138605440

素因数分解:

$2^7\times 5^1\times {\mathrm{216571}}^1$

素因数の和:216590

約数の個数: 32

約数和(自身を含む): 331355160

約数和(自身を除く): 192749720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 216571, 433142, 866284, 1082855, 1732568, 2165710, 3465136, 4331420, 6930272, 8662840, 13860544, 17325680, 27721088, 34651360, 69302720, 138605440]

約数ペア:

[(1, 138605440), (2, 69302720), (4, 34651360), (5, 27721088), (8, 17325680), (10, 13860544), (16, 8662840), (20, 6930272), (32, 4331420), (40, 3465136), (64, 2165710), (80, 1732568), (128, 1082855), (160, 866284), (320, 433142), (640, 216571)]