256280960

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{30803}}^1$

素因数の和:30835

約数の個数: 64

約数和(自身を含む): 659821680

約数和(自身を除く): 403540720

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 260, 320, 416, 520, 640, 832, 1040, 1664, 2080, 4160, 8320, 30803, 61606, 123212, 154015, 246424, 308030, 400439, 492848, 616060, 800878, 985696, 1232120, 1601756, 1971392, 2002195, 2464240, 3203512, 3942784, 4004390, 4928480, 6407024, 8008780, 9856960, 12814048, 16017560, 19713920, 25628096, 32035120, 51256192, 64070240, 128140480, 256280960]

約数ペア:

[(1, 256280960), (2, 128140480), (4, 64070240), (5, 51256192), (8, 32035120), (10, 25628096), (13, 19713920), (16, 16017560), (20, 12814048), (26, 9856960), (32, 8008780), (40, 6407024), (52, 4928480), (64, 4004390), (65, 3942784), (80, 3203512), (104, 2464240), (128, 2002195), (130, 1971392), (160, 1601756), (208, 1232120), (260, 985696), (320, 800878), (416, 616060), (520, 492848), (640, 400439), (832, 308030), (1040, 246424), (1664, 154015), (2080, 123212), (4160, 61606), (8320, 30803)]