778635280

素因数分解:

$2^4\times 5^1\times {\mathrm{9732941}}^1$

素因数の和:9732954

約数の個数: 20

約数和(自身を含む): 1810327212

約数和(自身を除く): 1031691932

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 9732941, 19465882, 38931764, 48664705, 77863528, 97329410, 155727056, 194658820, 389317640, 778635280]

約数ペア:

[(1, 778635280), (2, 389317640), (4, 194658820), (5, 155727056), (8, 97329410), (10, 77863528), (16, 48664705), (20, 38931764), (40, 19465882), (80, 9732941)]