18184040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{643}}^1$

素因数の和:762

約数の個数: 64

約数和(自身を含む): 47295360

約数和(自身を除く): 29111320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 101, 140, 202, 280, 404, 505, 643, 707, 808, 1010, 1286, 1414, 2020, 2572, 2828, 3215, 3535, 4040, 4501, 5144, 5656, 6430, 7070, 9002, 12860, 14140, 18004, 22505, 25720, 28280, 36008, 45010, 64943, 90020, 129886, 180040, 259772, 324715, 454601, 519544, 649430, 909202, 1298860, 1818404, 2273005, 2597720, 3636808, 4546010, 9092020, 18184040]

約数ペア:

[(1, 18184040), (2, 9092020), (4, 4546010), (5, 3636808), (7, 2597720), (8, 2273005), (10, 1818404), (14, 1298860), (20, 909202), (28, 649430), (35, 519544), (40, 454601), (56, 324715), (70, 259772), (101, 180040), (140, 129886), (202, 90020), (280, 64943), (404, 45010), (505, 36008), (643, 28280), (707, 25720), (808, 22505), (1010, 18004), (1286, 14140), (1414, 12860), (2020, 9002), (2572, 7070), (2828, 6430), (3215, 5656), (3535, 5144), (4040, 4501)]