20989260

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{827}}^1$

素因数の和:892

約数の個数: 96

約数和(自身を含む): 66769920

約数和(自身を除く): 45780660

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 47, 54, 60, 90, 94, 108, 135, 141, 180, 188, 235, 270, 282, 423, 470, 540, 564, 705, 827, 846, 940, 1269, 1410, 1654, 1692, 2115, 2481, 2538, 2820, 3308, 4135, 4230, 4962, 5076, 6345, 7443, 8270, 8460, 9924, 12405, 12690, 14886, 16540, 22329, 24810, 25380, 29772, 37215, 38869, 44658, 49620, 74430, 77738, 89316, 111645, 116607, 148860, 155476, 194345, 223290, 233214, 349821, 388690, 446580, 466428, 583035, 699642, 777380, 1049463, 1166070, 1399284, 1749105, 2098926, 2332140, 3498210, 4197852, 5247315, 6996420, 10494630, 20989260]

約数ペア:

[(1, 20989260), (2, 10494630), (3, 6996420), (4, 5247315), (5, 4197852), (6, 3498210), (9, 2332140), (10, 2098926), (12, 1749105), (15, 1399284), (18, 1166070), (20, 1049463), (27, 777380), (30, 699642), (36, 583035), (45, 466428), (47, 446580), (54, 388690), (60, 349821), (90, 233214), (94, 223290), (108, 194345), (135, 155476), (141, 148860), (180, 116607), (188, 111645), (235, 89316), (270, 77738), (282, 74430), (423, 49620), (470, 44658), (540, 38869), (564, 37215), (705, 29772), (827, 25380), (846, 24810), (940, 22329), (1269, 16540), (1410, 14886), (1654, 12690), (1692, 12405), (2115, 9924), (2481, 8460), (2538, 8270), (2820, 7443), (3308, 6345), (4135, 5076), (4230, 4962)]