19777870

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{181}}^1\times {\mathrm{223}}^1$

素因数の和:425

約数の個数: 48

約数和(自身を含む): 41827968

約数和(自身を除く): 22050098

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 181, 223, 245, 362, 446, 490, 905, 1115, 1267, 1561, 1810, 2230, 2534, 3122, 6335, 7805, 8869, 10927, 12670, 15610, 17738, 21854, 40363, 44345, 54635, 80726, 88690, 109270, 201815, 282541, 403630, 565082, 1412705, 1977787, 2825410, 3955574, 9888935, 19777870]

約数ペア:

[(1, 19777870), (2, 9888935), (5, 3955574), (7, 2825410), (10, 1977787), (14, 1412705), (35, 565082), (49, 403630), (70, 282541), (98, 201815), (181, 109270), (223, 88690), (245, 80726), (362, 54635), (446, 44345), (490, 40363), (905, 21854), (1115, 17738), (1267, 15610), (1561, 12670), (1810, 10927), (2230, 8869), (2534, 7805), (3122, 6335)]