20891340

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{277}}^1\times {\mathrm{419}}^1$

素因数の和:711

約数の個数: 72

約数和(自身を含む): 63750960

約数和(自身を除く): 42859620

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 277, 419, 554, 831, 838, 1108, 1257, 1385, 1662, 1676, 2095, 2493, 2514, 2770, 3324, 3771, 4155, 4190, 4986, 5028, 5540, 6285, 7542, 8310, 8380, 9972, 12465, 12570, 15084, 16620, 18855, 24930, 25140, 37710, 49860, 75420, 116063, 232126, 348189, 464252, 580315, 696378, 1044567, 1160630, 1392756, 1740945, 2089134, 2321260, 3481890, 4178268, 5222835, 6963780, 10445670, 20891340]

約数ペア:

[(1, 20891340), (2, 10445670), (3, 6963780), (4, 5222835), (5, 4178268), (6, 3481890), (9, 2321260), (10, 2089134), (12, 1740945), (15, 1392756), (18, 1160630), (20, 1044567), (30, 696378), (36, 580315), (45, 464252), (60, 348189), (90, 232126), (180, 116063), (277, 75420), (419, 49860), (554, 37710), (831, 25140), (838, 24930), (1108, 18855), (1257, 16620), (1385, 15084), (1662, 12570), (1676, 12465), (2095, 9972), (2493, 8380), (2514, 8310), (2770, 7542), (3324, 6285), (3771, 5540), (4155, 5028), (4190, 4986)]