8140280

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{11971}}^1$

素因数の和:11999

約数の個数: 32

約数和(自身を含む): 19394640

約数和(自身を除く): 11254360

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 11971, 23942, 47884, 59855, 95768, 119710, 203507, 239420, 407014, 478840, 814028, 1017535, 1628056, 2035070, 4070140, 8140280]

約数ペア:

[(1, 8140280), (2, 4070140), (4, 2035070), (5, 1628056), (8, 1017535), (10, 814028), (17, 478840), (20, 407014), (34, 239420), (40, 203507), (68, 119710), (85, 95768), (136, 59855), (170, 47884), (340, 23942), (680, 11971)]