18166780

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{541}}^1$

素因数の和:646

約数の個数: 48

約数和(自身を含む): 40428864

約数和(自身を除く): 22262084

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 73, 92, 115, 146, 230, 292, 365, 460, 541, 730, 1082, 1460, 1679, 2164, 2705, 3358, 5410, 6716, 8395, 10820, 12443, 16790, 24886, 33580, 39493, 49772, 62215, 78986, 124430, 157972, 197465, 248860, 394930, 789860, 908339, 1816678, 3633356, 4541695, 9083390, 18166780]

約数ペア:

[(1, 18166780), (2, 9083390), (4, 4541695), (5, 3633356), (10, 1816678), (20, 908339), (23, 789860), (46, 394930), (73, 248860), (92, 197465), (115, 157972), (146, 124430), (230, 78986), (292, 62215), (365, 49772), (460, 39493), (541, 33580), (730, 24886), (1082, 16790), (1460, 12443), (1679, 10820), (2164, 8395), (2705, 6716), (3358, 5410)]