156978560

素因数分解:

$2^7\times 5^1\times {\mathrm{245279}}^1$

素因数の和:245298

約数の個数: 32

約数和(自身を含む): 375278400

約数和(自身を除く): 218299840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 245279, 490558, 981116, 1226395, 1962232, 2452790, 3924464, 4905580, 7848928, 9811160, 15697856, 19622320, 31395712, 39244640, 78489280, 156978560]

約数ペア:

[(1, 156978560), (2, 78489280), (4, 39244640), (5, 31395712), (8, 19622320), (10, 15697856), (16, 9811160), (20, 7848928), (32, 4905580), (40, 3924464), (64, 2452790), (80, 1962232), (128, 1226395), (160, 981116), (320, 490558), (640, 245279)]