21057552

素因数分解:

$2^4\times 3^2\times {\mathrm{257}}^1\times {\mathrm{569}}^1$

素因数の和:840

約数の個数: 60

約数和(自身を含む): 59265180

約数和(自身を除く): 38207628

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144, 257, 514, 569, 771, 1028, 1138, 1542, 1707, 2056, 2276, 2313, 3084, 3414, 4112, 4552, 4626, 5121, 6168, 6828, 9104, 9252, 10242, 12336, 13656, 18504, 20484, 27312, 37008, 40968, 81936, 146233, 292466, 438699, 584932, 877398, 1169864, 1316097, 1754796, 2339728, 2632194, 3509592, 5264388, 7019184, 10528776, 21057552]

約数ペア:

[(1, 21057552), (2, 10528776), (3, 7019184), (4, 5264388), (6, 3509592), (8, 2632194), (9, 2339728), (12, 1754796), (16, 1316097), (18, 1169864), (24, 877398), (36, 584932), (48, 438699), (72, 292466), (144, 146233), (257, 81936), (514, 40968), (569, 37008), (771, 27312), (1028, 20484), (1138, 18504), (1542, 13656), (1707, 12336), (2056, 10242), (2276, 9252), (2313, 9104), (3084, 6828), (3414, 6168), (4112, 5121), (4552, 4626)]