19689184

素因数分解:

$2^5\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{349}}^1$

素因数の和:443

約数の個数: 48

約数和(自身を含む): 40748400

約数和(自身を除く): 21059216

約数列:

[1, 2, 4, 8, 16, 32, 41, 43, 82, 86, 164, 172, 328, 344, 349, 656, 688, 698, 1312, 1376, 1396, 1763, 2792, 3526, 5584, 7052, 11168, 14104, 14309, 15007, 28208, 28618, 30014, 56416, 57236, 60028, 114472, 120056, 228944, 240112, 457888, 480224, 615287, 1230574, 2461148, 4922296, 9844592, 19689184]

約数ペア:

[(1, 19689184), (2, 9844592), (4, 4922296), (8, 2461148), (16, 1230574), (32, 615287), (41, 480224), (43, 457888), (82, 240112), (86, 228944), (164, 120056), (172, 114472), (328, 60028), (344, 57236), (349, 56416), (656, 30014), (688, 28618), (698, 28208), (1312, 15007), (1376, 14309), (1396, 14104), (1763, 11168), (2792, 7052), (3526, 5584)]