20759120

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{6329}}^1$

素因数の和:6383

約数の個数: 40

約数和(自身を含む): 49449960

約数和(自身を除く): 28690840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 6329, 12658, 25316, 31645, 50632, 63290, 101264, 126580, 253160, 259489, 506320, 518978, 1037956, 1297445, 2075912, 2594890, 4151824, 5189780, 10379560, 20759120]

約数ペア:

[(1, 20759120), (2, 10379560), (4, 5189780), (5, 4151824), (8, 2594890), (10, 2075912), (16, 1297445), (20, 1037956), (40, 518978), (41, 506320), (80, 259489), (82, 253160), (164, 126580), (205, 101264), (328, 63290), (410, 50632), (656, 31645), (820, 25316), (1640, 12658), (3280, 6329)]