20164720

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{14827}}^1$

素因数の和:14857

約数の個数: 40

約数和(自身を含む): 49644144

約数和(自身を除く): 29479424

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 14827, 29654, 59308, 74135, 118616, 148270, 237232, 252059, 296540, 504118, 593080, 1008236, 1186160, 1260295, 2016472, 2520590, 4032944, 5041180, 10082360, 20164720]

約数ペア:

[(1, 20164720), (2, 10082360), (4, 5041180), (5, 4032944), (8, 2520590), (10, 2016472), (16, 1260295), (17, 1186160), (20, 1008236), (34, 593080), (40, 504118), (68, 296540), (80, 252059), (85, 237232), (136, 148270), (170, 118616), (272, 74135), (340, 59308), (680, 29654), (1360, 14827)]