20511864

素因数分解:

$2^3\times 3^2\times {\mathrm{347}}^1\times {\mathrm{821}}^1$

素因数の和:1180

約数の個数: 48

約数和(自身を含む): 55780920

約数和(自身を除く): 35269056

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 347, 694, 821, 1041, 1388, 1642, 2082, 2463, 2776, 3123, 3284, 4164, 4926, 6246, 6568, 7389, 8328, 9852, 12492, 14778, 19704, 24984, 29556, 59112, 284887, 569774, 854661, 1139548, 1709322, 2279096, 2563983, 3418644, 5127966, 6837288, 10255932, 20511864]

約数ペア:

[(1, 20511864), (2, 10255932), (3, 6837288), (4, 5127966), (6, 3418644), (8, 2563983), (9, 2279096), (12, 1709322), (18, 1139548), (24, 854661), (36, 569774), (72, 284887), (347, 59112), (694, 29556), (821, 24984), (1041, 19704), (1388, 14778), (1642, 12492), (2082, 9852), (2463, 8328), (2776, 7389), (3123, 6568), (3284, 6246), (4164, 4926)]