99921280

素因数分解:

$2^7\times 5^1\times {\mathrm{156127}}^1$

素因数の和:156146

約数の個数: 32

約数和(自身を含む): 238875840

約数和(自身を除く): 138954560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 156127, 312254, 624508, 780635, 1249016, 1561270, 2498032, 3122540, 4996064, 6245080, 9992128, 12490160, 19984256, 24980320, 49960640, 99921280]

約数ペア:

[(1, 99921280), (2, 49960640), (4, 24980320), (5, 19984256), (8, 12490160), (10, 9992128), (16, 6245080), (20, 4996064), (32, 3122540), (40, 2498032), (64, 1561270), (80, 1249016), (128, 780635), (160, 624508), (320, 312254), (640, 156127)]