255280640

素因数分解:

$2^9\times 5^1\times {\mathrm{99719}}^1$

素因数の和:99742

約数の個数: 40

約数和(自身を含む): 612081360

約数和(自身を除く): 356800720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 99719, 199438, 398876, 498595, 797752, 997190, 1595504, 1994380, 3191008, 3988760, 6382016, 7977520, 12764032, 15955040, 25528064, 31910080, 51056128, 63820160, 127640320, 255280640]

約数ペア:

[(1, 255280640), (2, 127640320), (4, 63820160), (5, 51056128), (8, 31910080), (10, 25528064), (16, 15955040), (20, 12764032), (32, 7977520), (40, 6382016), (64, 3988760), (80, 3191008), (128, 1994380), (160, 1595504), (256, 997190), (320, 797752), (512, 498595), (640, 398876), (1280, 199438), (2560, 99719)]