420904240

素因数分解:

$2^4\times 5^1\times {\mathrm{1171}}^1\times {\mathrm{4493}}^1$

素因数の和:5677

約数の個数: 40

約数和(自身を含む): 979656048

約数和(自身を除く): 558751808

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1171, 2342, 4493, 4684, 5855, 8986, 9368, 11710, 17972, 18736, 22465, 23420, 35944, 44930, 46840, 71888, 89860, 93680, 179720, 359440, 5261303, 10522606, 21045212, 26306515, 42090424, 52613030, 84180848, 105226060, 210452120, 420904240]

約数ペア:

[(1, 420904240), (2, 210452120), (4, 105226060), (5, 84180848), (8, 52613030), (10, 42090424), (16, 26306515), (20, 21045212), (40, 10522606), (80, 5261303), (1171, 359440), (2342, 179720), (4493, 93680), (4684, 89860), (5855, 71888), (8986, 46840), (9368, 44930), (11710, 35944), (17972, 23420), (18736, 22465)]