20261745

素因数分解:

$3^4\times 5^1\times 7^2\times {\mathrm{1021}}^1$

素因数の和:1052

約数の個数: 60

約数和(自身を含む): 42292404

約数和(自身を除く): 22030659

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 49, 63, 81, 105, 135, 147, 189, 245, 315, 405, 441, 567, 735, 945, 1021, 1323, 2205, 2835, 3063, 3969, 5105, 6615, 7147, 9189, 15315, 19845, 21441, 27567, 35735, 45945, 50029, 64323, 82701, 107205, 137835, 150087, 192969, 250145, 321615, 413505, 450261, 578907, 750435, 964845, 1350783, 2251305, 2894535, 4052349, 6753915, 20261745]

約数ペア:

[(1, 20261745), (3, 6753915), (5, 4052349), (7, 2894535), (9, 2251305), (15, 1350783), (21, 964845), (27, 750435), (35, 578907), (45, 450261), (49, 413505), (63, 321615), (81, 250145), (105, 192969), (135, 150087), (147, 137835), (189, 107205), (245, 82701), (315, 64323), (405, 50029), (441, 45945), (567, 35735), (735, 27567), (945, 21441), (1021, 19845), (1323, 15315), (2205, 9189), (2835, 7147), (3063, 6615), (3969, 5105)]