2078987900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{409}}^1\times {\mathrm{4621}}^1$

素因数の和:5055

約数の個数: 72

約数和(自身を含む): 4934632080

約数和(自身を除く): 2855644180

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 220, 275, 409, 550, 818, 1100, 1636, 2045, 4090, 4499, 4621, 8180, 8998, 9242, 10225, 17996, 18484, 20450, 22495, 23105, 40900, 44990, 46210, 50831, 89980, 92420, 101662, 112475, 115525, 203324, 224950, 231050, 254155, 449900, 462100, 508310, 1016620, 1270775, 1889989, 2541550, 3779978, 5083100, 7559956, 9449945, 18899890, 20789879, 37799780, 41579758, 47249725, 83159516, 94499450, 103949395, 188998900, 207898790, 415797580, 519746975, 1039493950, 2078987900]

約数ペア:

[(1, 2078987900), (2, 1039493950), (4, 519746975), (5, 415797580), (10, 207898790), (11, 188998900), (20, 103949395), (22, 94499450), (25, 83159516), (44, 47249725), (50, 41579758), (55, 37799780), (100, 20789879), (110, 18899890), (220, 9449945), (275, 7559956), (409, 5083100), (550, 3779978), (818, 2541550), (1100, 1889989), (1636, 1270775), (2045, 1016620), (4090, 508310), (4499, 462100), (4621, 449900), (8180, 254155), (8998, 231050), (9242, 224950), (10225, 203324), (17996, 115525), (18484, 112475), (20450, 101662), (22495, 92420), (23105, 89980), (40900, 50831), (44990, 46210)]