20808732

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{823}}^1$

素因数の和:887

約数の個数: 72

約数和(自身を含む): 57864576

約数和(自身を除く): 37055844

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 43, 49, 84, 86, 98, 129, 147, 172, 196, 258, 294, 301, 516, 588, 602, 823, 903, 1204, 1646, 1806, 2107, 2469, 3292, 3612, 4214, 4938, 5761, 6321, 8428, 9876, 11522, 12642, 17283, 23044, 25284, 34566, 35389, 40327, 69132, 70778, 80654, 106167, 120981, 141556, 161308, 212334, 241962, 247723, 424668, 483924, 495446, 743169, 990892, 1486338, 1734061, 2972676, 3468122, 5202183, 6936244, 10404366, 20808732]

約数ペア:

[(1, 20808732), (2, 10404366), (3, 6936244), (4, 5202183), (6, 3468122), (7, 2972676), (12, 1734061), (14, 1486338), (21, 990892), (28, 743169), (42, 495446), (43, 483924), (49, 424668), (84, 247723), (86, 241962), (98, 212334), (129, 161308), (147, 141556), (172, 120981), (196, 106167), (258, 80654), (294, 70778), (301, 69132), (516, 40327), (588, 35389), (602, 34566), (823, 25284), (903, 23044), (1204, 17283), (1646, 12642), (1806, 11522), (2107, 9876), (2469, 8428), (3292, 6321), (3612, 5761), (4214, 4938)]