21595600

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{4153}}^1$

素因数の和:4184

約数の個数: 60

約数和(自身を含む): 55887916

約数和(自身を除く): 34292316

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 130, 200, 208, 260, 325, 400, 520, 650, 1040, 1300, 2600, 4153, 5200, 8306, 16612, 20765, 33224, 41530, 53989, 66448, 83060, 103825, 107978, 166120, 207650, 215956, 269945, 332240, 415300, 431912, 539890, 830600, 863824, 1079780, 1349725, 1661200, 2159560, 2699450, 4319120, 5398900, 10797800, 21595600]

約数ペア:

[(1, 21595600), (2, 10797800), (4, 5398900), (5, 4319120), (8, 2699450), (10, 2159560), (13, 1661200), (16, 1349725), (20, 1079780), (25, 863824), (26, 830600), (40, 539890), (50, 431912), (52, 415300), (65, 332240), (80, 269945), (100, 215956), (104, 207650), (130, 166120), (200, 107978), (208, 103825), (260, 83060), (325, 66448), (400, 53989), (520, 41530), (650, 33224), (1040, 20765), (1300, 16612), (2600, 8306), (4153, 5200)]