20494215

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{7229}}^1$

素因数の和:7253

約数の個数: 40

約数和(自身を含む): 41991840

約数和(自身を除く): 21497625

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 189, 315, 405, 567, 945, 2835, 7229, 21687, 36145, 50603, 65061, 108435, 151809, 195183, 253015, 325305, 455427, 585549, 759045, 975915, 1366281, 2277135, 2927745, 4098843, 6831405, 20494215]

約数ペア:

[(1, 20494215), (3, 6831405), (5, 4098843), (7, 2927745), (9, 2277135), (15, 1366281), (21, 975915), (27, 759045), (35, 585549), (45, 455427), (63, 325305), (81, 253015), (105, 195183), (135, 151809), (189, 108435), (315, 65061), (405, 50603), (567, 36145), (945, 21687), (2835, 7229)]