20840004

素因数分解:

$2^2\times 3^4\times {\mathrm{131}}^1\times {\mathrm{491}}^1$

素因数の和:638

約数の個数: 60

約数和(自身を含む): 55007568

約数和(自身を除く): 34167564

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 131, 162, 262, 324, 393, 491, 524, 786, 982, 1179, 1473, 1572, 1964, 2358, 2946, 3537, 4419, 4716, 5892, 7074, 8838, 10611, 13257, 14148, 17676, 21222, 26514, 39771, 42444, 53028, 64321, 79542, 128642, 159084, 192963, 257284, 385926, 578889, 771852, 1157778, 1736667, 2315556, 3473334, 5210001, 6946668, 10420002, 20840004]

約数ペア:

[(1, 20840004), (2, 10420002), (3, 6946668), (4, 5210001), (6, 3473334), (9, 2315556), (12, 1736667), (18, 1157778), (27, 771852), (36, 578889), (54, 385926), (81, 257284), (108, 192963), (131, 159084), (162, 128642), (262, 79542), (324, 64321), (393, 53028), (491, 42444), (524, 39771), (786, 26514), (982, 21222), (1179, 17676), (1473, 14148), (1572, 13257), (1964, 10611), (2358, 8838), (2946, 7074), (3537, 5892), (4419, 4716)]