80829520

素因数分解:

$2^4\times 5^1\times {\mathrm{149}}^1\times {\mathrm{6781}}^1$

素因数の和:6943

約数の個数: 40

約数和(自身を含む): 189217800

約数和(自身を除く): 108388280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 149, 298, 596, 745, 1192, 1490, 2384, 2980, 5960, 6781, 11920, 13562, 27124, 33905, 54248, 67810, 108496, 135620, 271240, 542480, 1010369, 2020738, 4041476, 5051845, 8082952, 10103690, 16165904, 20207380, 40414760, 80829520]

約数ペア:

[(1, 80829520), (2, 40414760), (4, 20207380), (5, 16165904), (8, 10103690), (10, 8082952), (16, 5051845), (20, 4041476), (40, 2020738), (80, 1010369), (149, 542480), (298, 271240), (596, 135620), (745, 108496), (1192, 67810), (1490, 54248), (2384, 33905), (2980, 27124), (5960, 13562), (6781, 11920)]