66278680

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{647}}^1$

素因数の和:868

約数の個数: 64

約数和(自身を含む): 161663040

約数和(自身を除く): 95384360

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 197, 260, 394, 520, 647, 788, 985, 1294, 1576, 1970, 2561, 2588, 3235, 3940, 5122, 5176, 6470, 7880, 8411, 10244, 12805, 12940, 16822, 20488, 25610, 25880, 33644, 42055, 51220, 67288, 84110, 102440, 127459, 168220, 254918, 336440, 509836, 637295, 1019672, 1274590, 1656967, 2549180, 3313934, 5098360, 6627868, 8284835, 13255736, 16569670, 33139340, 66278680]

約数ペア:

[(1, 66278680), (2, 33139340), (4, 16569670), (5, 13255736), (8, 8284835), (10, 6627868), (13, 5098360), (20, 3313934), (26, 2549180), (40, 1656967), (52, 1274590), (65, 1019672), (104, 637295), (130, 509836), (197, 336440), (260, 254918), (394, 168220), (520, 127459), (647, 102440), (788, 84110), (985, 67288), (1294, 51220), (1576, 42055), (1970, 33644), (2561, 25880), (2588, 25610), (3235, 20488), (3940, 16822), (5122, 12940), (5176, 12805), (6470, 10244), (7880, 8411)]