27520840

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{173}}^1$

素因数の和:322

約数の個数: 64

約数和(自身を含む): 64456560

約数和(自身を除く): 36935720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 97, 164, 173, 194, 205, 328, 346, 388, 410, 485, 692, 776, 820, 865, 970, 1384, 1640, 1730, 1940, 3460, 3880, 3977, 6920, 7093, 7954, 14186, 15908, 16781, 19885, 28372, 31816, 33562, 35465, 39770, 56744, 67124, 70930, 79540, 83905, 134248, 141860, 159080, 167810, 283720, 335620, 671240, 688021, 1376042, 2752084, 3440105, 5504168, 6880210, 13760420, 27520840]

約数ペア:

[(1, 27520840), (2, 13760420), (4, 6880210), (5, 5504168), (8, 3440105), (10, 2752084), (20, 1376042), (40, 688021), (41, 671240), (82, 335620), (97, 283720), (164, 167810), (173, 159080), (194, 141860), (205, 134248), (328, 83905), (346, 79540), (388, 70930), (410, 67124), (485, 56744), (692, 39770), (776, 35465), (820, 33562), (865, 31816), (970, 28372), (1384, 19885), (1640, 16781), (1730, 15908), (1940, 14186), (3460, 7954), (3880, 7093), (3977, 6920)]