156736640

素因数分解:

$2^7\times 5^1\times {\mathrm{244901}}^1$

素因数の和:244920

約数の個数: 32

約数和(自身を含む): 374700060

約数和(自身を除く): 217963420

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 244901, 489802, 979604, 1224505, 1959208, 2449010, 3918416, 4898020, 7836832, 9796040, 15673664, 19592080, 31347328, 39184160, 78368320, 156736640]

約数ペア:

[(1, 156736640), (2, 78368320), (4, 39184160), (5, 31347328), (8, 19592080), (10, 15673664), (16, 9796040), (20, 7836832), (32, 4898020), (40, 3918416), (64, 2449010), (80, 1959208), (128, 1224505), (160, 979604), (320, 489802), (640, 244901)]