18711576

素因数分解:

$2^3\times 3^2\times {\mathrm{13}}^1\times {\mathrm{19991}}^1$

素因数の和:20016

約数の個数: 48

約数和(自身を含む): 54578160

約数和(自身を除く): 35866584

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 24, 26, 36, 39, 52, 72, 78, 104, 117, 156, 234, 312, 468, 936, 19991, 39982, 59973, 79964, 119946, 159928, 179919, 239892, 259883, 359838, 479784, 519766, 719676, 779649, 1039532, 1439352, 1559298, 2079064, 2338947, 3118596, 4677894, 6237192, 9355788, 18711576]

約数ペア:

[(1, 18711576), (2, 9355788), (3, 6237192), (4, 4677894), (6, 3118596), (8, 2338947), (9, 2079064), (12, 1559298), (13, 1439352), (18, 1039532), (24, 779649), (26, 719676), (36, 519766), (39, 479784), (52, 359838), (72, 259883), (78, 239892), (104, 179919), (117, 159928), (156, 119946), (234, 79964), (312, 59973), (468, 39982), (936, 19991)]