80004080

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1789}}^1$

素因数の和:1858

約数の個数: 80

約数和(自身を含む): 205091040

約数和(自身を除く): 125086960

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 43, 52, 65, 80, 86, 104, 130, 172, 208, 215, 260, 344, 430, 520, 559, 688, 860, 1040, 1118, 1720, 1789, 2236, 2795, 3440, 3578, 4472, 5590, 7156, 8944, 8945, 11180, 14312, 17890, 22360, 23257, 28624, 35780, 44720, 46514, 71560, 76927, 93028, 116285, 143120, 153854, 186056, 232570, 307708, 372112, 384635, 465140, 615416, 769270, 930280, 1000051, 1230832, 1538540, 1860560, 2000102, 3077080, 4000204, 5000255, 6154160, 8000408, 10000510, 16000816, 20001020, 40002040, 80004080]

約数ペア:

[(1, 80004080), (2, 40002040), (4, 20001020), (5, 16000816), (8, 10000510), (10, 8000408), (13, 6154160), (16, 5000255), (20, 4000204), (26, 3077080), (40, 2000102), (43, 1860560), (52, 1538540), (65, 1230832), (80, 1000051), (86, 930280), (104, 769270), (130, 615416), (172, 465140), (208, 384635), (215, 372112), (260, 307708), (344, 232570), (430, 186056), (520, 153854), (559, 143120), (688, 116285), (860, 93028), (1040, 76927), (1118, 71560), (1720, 46514), (1789, 44720), (2236, 35780), (2795, 28624), (3440, 23257), (3578, 22360), (4472, 17890), (5590, 14312), (7156, 11180), (8944, 8945)]