20779560

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{293}}^1$

素因数の和:507

約数の個数: 96

約数和(自身を含む): 68108040

約数和(自身を除く): 47328480

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 197, 293, 360, 394, 586, 591, 788, 879, 985, 1172, 1182, 1465, 1576, 1758, 1773, 1970, 2344, 2364, 2637, 2930, 2955, 3516, 3546, 3940, 4395, 4728, 5274, 5860, 5910, 7032, 7092, 7880, 8790, 8865, 10548, 11720, 11820, 13185, 14184, 17580, 17730, 21096, 23640, 26370, 35160, 35460, 52740, 57721, 70920, 105480, 115442, 173163, 230884, 288605, 346326, 461768, 519489, 577210, 692652, 865815, 1038978, 1154420, 1385304, 1731630, 2077956, 2308840, 2597445, 3463260, 4155912, 5194890, 6926520, 10389780, 20779560]

約数ペア:

[(1, 20779560), (2, 10389780), (3, 6926520), (4, 5194890), (5, 4155912), (6, 3463260), (8, 2597445), (9, 2308840), (10, 2077956), (12, 1731630), (15, 1385304), (18, 1154420), (20, 1038978), (24, 865815), (30, 692652), (36, 577210), (40, 519489), (45, 461768), (60, 346326), (72, 288605), (90, 230884), (120, 173163), (180, 115442), (197, 105480), (293, 70920), (360, 57721), (394, 52740), (586, 35460), (591, 35160), (788, 26370), (879, 23640), (985, 21096), (1172, 17730), (1182, 17580), (1465, 14184), (1576, 13185), (1758, 11820), (1773, 11720), (1970, 10548), (2344, 8865), (2364, 8790), (2637, 7880), (2930, 7092), (2955, 7032), (3516, 5910), (3546, 5860), (3940, 5274), (4395, 4728)]