20613456

素因数分解:

$2^4\times 3^2\times {\mathrm{257}}^1\times {\mathrm{557}}^1$

素因数の和:828

約数の個数: 60

約数和(自身を含む): 58017492

約数和(自身を除く): 37404036

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144, 257, 514, 557, 771, 1028, 1114, 1542, 1671, 2056, 2228, 2313, 3084, 3342, 4112, 4456, 4626, 5013, 6168, 6684, 8912, 9252, 10026, 12336, 13368, 18504, 20052, 26736, 37008, 40104, 80208, 143149, 286298, 429447, 572596, 858894, 1145192, 1288341, 1717788, 2290384, 2576682, 3435576, 5153364, 6871152, 10306728, 20613456]

約数ペア:

[(1, 20613456), (2, 10306728), (3, 6871152), (4, 5153364), (6, 3435576), (8, 2576682), (9, 2290384), (12, 1717788), (16, 1288341), (18, 1145192), (24, 858894), (36, 572596), (48, 429447), (72, 286298), (144, 143149), (257, 80208), (514, 40104), (557, 37008), (771, 26736), (1028, 20052), (1114, 18504), (1542, 13368), (1671, 12336), (2056, 10026), (2228, 9252), (2313, 8912), (3084, 6684), (3342, 6168), (4112, 5013), (4456, 4626)]