7778920

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{1721}}^1$

素因数の和:1845

約数の個数: 32

約数和(自身を含む): 17667720

約数和(自身を除く): 9888800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 226, 452, 565, 904, 1130, 1721, 2260, 3442, 4520, 6884, 8605, 13768, 17210, 34420, 68840, 194473, 388946, 777892, 972365, 1555784, 1944730, 3889460, 7778920]

約数ペア:

[(1, 7778920), (2, 3889460), (4, 1944730), (5, 1555784), (8, 972365), (10, 777892), (20, 388946), (40, 194473), (113, 68840), (226, 34420), (452, 17210), (565, 13768), (904, 8605), (1130, 6884), (1721, 4520), (2260, 3442)]