16180040

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{409}}^1$

素因数の和:486

約数の個数: 64

約数和(自身を含む): 38966400

約数和(自身を除く): 22786360

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 43, 46, 86, 92, 115, 172, 184, 215, 230, 344, 409, 430, 460, 818, 860, 920, 989, 1636, 1720, 1978, 2045, 3272, 3956, 4090, 4945, 7912, 8180, 9407, 9890, 16360, 17587, 18814, 19780, 35174, 37628, 39560, 47035, 70348, 75256, 87935, 94070, 140696, 175870, 188140, 351740, 376280, 404501, 703480, 809002, 1618004, 2022505, 3236008, 4045010, 8090020, 16180040]

約数ペア:

[(1, 16180040), (2, 8090020), (4, 4045010), (5, 3236008), (8, 2022505), (10, 1618004), (20, 809002), (23, 703480), (40, 404501), (43, 376280), (46, 351740), (86, 188140), (92, 175870), (115, 140696), (172, 94070), (184, 87935), (215, 75256), (230, 70348), (344, 47035), (409, 39560), (430, 37628), (460, 35174), (818, 19780), (860, 18814), (920, 17587), (989, 16360), (1636, 9890), (1720, 9407), (1978, 8180), (2045, 7912), (3272, 4945), (3956, 4090)]