407355820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{409}}^1\times {\mathrm{2621}}^1$

素因数の和:3058

約数の個数: 48

約数和(自身を含む): 903016800

約数和(自身を除く): 495660980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 409, 818, 1636, 2045, 2621, 4090, 5242, 7771, 8180, 10484, 13105, 15542, 26210, 31084, 38855, 49799, 52420, 77710, 99598, 155420, 199196, 248995, 497990, 995980, 1071989, 2143978, 4287956, 5359945, 10719890, 20367791, 21439780, 40735582, 81471164, 101838955, 203677910, 407355820]

約数ペア:

[(1, 407355820), (2, 203677910), (4, 101838955), (5, 81471164), (10, 40735582), (19, 21439780), (20, 20367791), (38, 10719890), (76, 5359945), (95, 4287956), (190, 2143978), (380, 1071989), (409, 995980), (818, 497990), (1636, 248995), (2045, 199196), (2621, 155420), (4090, 99598), (5242, 77710), (7771, 52420), (8180, 49799), (10484, 38855), (13105, 31084), (15542, 26210)]