19704640

素因数分解:

$2^6\times 5^1\times {\mathrm{139}}^1\times {\mathrm{443}}^1$

素因数の和:599

約数の個数: 56

約数和(自身を含む): 47365920

約数和(自身を除く): 27661280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 139, 160, 278, 320, 443, 556, 695, 886, 1112, 1390, 1772, 2215, 2224, 2780, 3544, 4430, 4448, 5560, 7088, 8860, 8896, 11120, 14176, 17720, 22240, 28352, 35440, 44480, 61577, 70880, 123154, 141760, 246308, 307885, 492616, 615770, 985232, 1231540, 1970464, 2463080, 3940928, 4926160, 9852320, 19704640]

約数ペア:

[(1, 19704640), (2, 9852320), (4, 4926160), (5, 3940928), (8, 2463080), (10, 1970464), (16, 1231540), (20, 985232), (32, 615770), (40, 492616), (64, 307885), (80, 246308), (139, 141760), (160, 123154), (278, 70880), (320, 61577), (443, 44480), (556, 35440), (695, 28352), (886, 22240), (1112, 17720), (1390, 14176), (1772, 11120), (2215, 8896), (2224, 8860), (2780, 7088), (3544, 5560), (4430, 4448)]