20976165

素因数分解:

$3^4\times 5^1\times 7^3\times {\mathrm{151}}^1$

素因数の和:189

約数の個数: 80

約数和(自身を含む): 44140800

約数和(自身を除く): 23164635

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 49, 63, 81, 105, 135, 147, 151, 189, 245, 315, 343, 405, 441, 453, 567, 735, 755, 945, 1029, 1057, 1323, 1359, 1715, 2205, 2265, 2835, 3087, 3171, 3969, 4077, 5145, 5285, 6615, 6795, 7399, 9261, 9513, 12231, 15435, 15855, 19845, 20385, 22197, 27783, 28539, 36995, 46305, 47565, 51793, 61155, 66591, 85617, 110985, 138915, 142695, 155379, 199773, 258965, 332955, 428085, 466137, 599319, 776895, 998865, 1398411, 2330685, 2996595, 4195233, 6992055, 20976165]

約数ペア:

[(1, 20976165), (3, 6992055), (5, 4195233), (7, 2996595), (9, 2330685), (15, 1398411), (21, 998865), (27, 776895), (35, 599319), (45, 466137), (49, 428085), (63, 332955), (81, 258965), (105, 199773), (135, 155379), (147, 142695), (151, 138915), (189, 110985), (245, 85617), (315, 66591), (343, 61155), (405, 51793), (441, 47565), (453, 46305), (567, 36995), (735, 28539), (755, 27783), (945, 22197), (1029, 20385), (1057, 19845), (1323, 15855), (1359, 15435), (1715, 12231), (2205, 9513), (2265, 9261), (2835, 7399), (3087, 6795), (3171, 6615), (3969, 5285), (4077, 5145)]