20781152

素因数分解:

$2^5\times 7^1\times {\mathrm{113}}^1\times {\mathrm{821}}^1$

素因数の和:951

約数の個数: 48

約数和(自身を含む): 47228832

約数和(自身を除く): 26447680

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 113, 224, 226, 452, 791, 821, 904, 1582, 1642, 1808, 3164, 3284, 3616, 5747, 6328, 6568, 11494, 12656, 13136, 22988, 25312, 26272, 45976, 91952, 92773, 183904, 185546, 371092, 649411, 742184, 1298822, 1484368, 2597644, 2968736, 5195288, 10390576, 20781152]

約数ペア:

[(1, 20781152), (2, 10390576), (4, 5195288), (7, 2968736), (8, 2597644), (14, 1484368), (16, 1298822), (28, 742184), (32, 649411), (56, 371092), (112, 185546), (113, 183904), (224, 92773), (226, 91952), (452, 45976), (791, 26272), (821, 25312), (904, 22988), (1582, 13136), (1642, 12656), (1808, 11494), (3164, 6568), (3284, 6328), (3616, 5747)]