20645835

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{103}}^1$

素因数の和:224

約数の個数: 64

約数和(自身を含む): 40255488

約数和(自身を除く): 19609653

約数列:

[1, 3, 5, 7, 15, 21, 23, 35, 69, 83, 103, 105, 115, 161, 249, 309, 345, 415, 483, 515, 581, 721, 805, 1245, 1545, 1743, 1909, 2163, 2369, 2415, 2905, 3605, 5727, 7107, 8549, 8715, 9545, 10815, 11845, 13363, 16583, 25647, 28635, 35535, 40089, 42745, 49749, 59843, 66815, 82915, 128235, 179529, 196627, 200445, 248745, 299215, 589881, 897645, 983135, 1376389, 2949405, 4129167, 6881945, 20645835]

約数ペア:

[(1, 20645835), (3, 6881945), (5, 4129167), (7, 2949405), (15, 1376389), (21, 983135), (23, 897645), (35, 589881), (69, 299215), (83, 248745), (103, 200445), (105, 196627), (115, 179529), (161, 128235), (249, 82915), (309, 66815), (345, 59843), (415, 49749), (483, 42745), (515, 40089), (581, 35535), (721, 28635), (805, 25647), (1245, 16583), (1545, 13363), (1743, 11845), (1909, 10815), (2163, 9545), (2369, 8715), (2415, 8549), (2905, 7107), (3605, 5727)]