278772080

素因数分解:

$2^4\times 5^1\times {\mathrm{1709}}^1\times {\mathrm{2039}}^1$

素因数の和:3761

約数の個数: 40

約数和(自身を含む): 648842400

約数和(自身を除く): 370070320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1709, 2039, 3418, 4078, 6836, 8156, 8545, 10195, 13672, 16312, 17090, 20390, 27344, 32624, 34180, 40780, 68360, 81560, 136720, 163120, 3484651, 6969302, 13938604, 17423255, 27877208, 34846510, 55754416, 69693020, 139386040, 278772080]

約数ペア:

[(1, 278772080), (2, 139386040), (4, 69693020), (5, 55754416), (8, 34846510), (10, 27877208), (16, 17423255), (20, 13938604), (40, 6969302), (80, 3484651), (1709, 163120), (2039, 136720), (3418, 81560), (4078, 68360), (6836, 40780), (8156, 34180), (8545, 32624), (10195, 27344), (13672, 20390), (16312, 17090)]