81225872

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{55787}}^1$

素因数の和:55815

約数の個数: 40

約数和(自身を含む): 193695936

約数和(自身を除く): 112470064

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 364, 728, 1456, 55787, 111574, 223148, 390509, 446296, 725231, 781018, 892592, 1450462, 1562036, 2900924, 3124072, 5076617, 5801848, 6248144, 10153234, 11603696, 20306468, 40612936, 81225872]

約数ペア:

[(1, 81225872), (2, 40612936), (4, 20306468), (7, 11603696), (8, 10153234), (13, 6248144), (14, 5801848), (16, 5076617), (26, 3124072), (28, 2900924), (52, 1562036), (56, 1450462), (91, 892592), (104, 781018), (112, 725231), (182, 446296), (208, 390509), (364, 223148), (728, 111574), (1456, 55787)]