127640320

素因数分解:

$2^8\times 5^1\times {\mathrm{99719}}^1$

素因数の和:99740

約数の個数: 36

約数和(自身を含む): 305741520

約数和(自身を除く): 178101200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 99719, 199438, 398876, 498595, 797752, 997190, 1595504, 1994380, 3191008, 3988760, 6382016, 7977520, 12764032, 15955040, 25528064, 31910080, 63820160, 127640320]

約数ペア:

[(1, 127640320), (2, 63820160), (4, 31910080), (5, 25528064), (8, 15955040), (10, 12764032), (16, 7977520), (20, 6382016), (32, 3988760), (40, 3191008), (64, 1994380), (80, 1595504), (128, 997190), (160, 797752), (256, 498595), (320, 398876), (640, 199438), (1280, 99719)]