19891090

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{197}}^1\times {\mathrm{439}}^1$

素因数の和:666

約数の個数: 32

約数和(自身を含む): 37635840

約数和(自身を除く): 17744750

約数列:

[1, 2, 5, 10, 23, 46, 115, 197, 230, 394, 439, 878, 985, 1970, 2195, 4390, 4531, 9062, 10097, 20194, 22655, 45310, 50485, 86483, 100970, 172966, 432415, 864830, 1989109, 3978218, 9945545, 19891090]

約数ペア:

[(1, 19891090), (2, 9945545), (5, 3978218), (10, 1989109), (23, 864830), (46, 432415), (115, 172966), (197, 100970), (230, 86483), (394, 50485), (439, 45310), (878, 22655), (985, 20194), (1970, 10097), (2195, 9062), (4390, 4531)]