20857616

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{673}}^1$

素因数の和:843

約数の個数: 40

約数和(自身を含む): 43877400

約数和(自身を除く): 23019784

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 149, 208, 298, 596, 673, 1192, 1346, 1937, 2384, 2692, 3874, 5384, 7748, 8749, 10768, 15496, 17498, 30992, 34996, 69992, 100277, 139984, 200554, 401108, 802216, 1303601, 1604432, 2607202, 5214404, 10428808, 20857616]

約数ペア:

[(1, 20857616), (2, 10428808), (4, 5214404), (8, 2607202), (13, 1604432), (16, 1303601), (26, 802216), (52, 401108), (104, 200554), (149, 139984), (208, 100277), (298, 69992), (596, 34996), (673, 30992), (1192, 17498), (1346, 15496), (1937, 10768), (2384, 8749), (2692, 7748), (3874, 5384)]