21731216

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{191}}^1\times {\mathrm{547}}^1$

素因数の和:759

約数の個数: 40

約数和(自身を含む): 45663744

約数和(自身を除く): 23932528

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 191, 208, 382, 547, 764, 1094, 1528, 2188, 2483, 3056, 4376, 4966, 7111, 8752, 9932, 14222, 19864, 28444, 39728, 56888, 104477, 113776, 208954, 417908, 835816, 1358201, 1671632, 2716402, 5432804, 10865608, 21731216]

約数ペア:

[(1, 21731216), (2, 10865608), (4, 5432804), (8, 2716402), (13, 1671632), (16, 1358201), (26, 835816), (52, 417908), (104, 208954), (191, 113776), (208, 104477), (382, 56888), (547, 39728), (764, 28444), (1094, 19864), (1528, 14222), (2188, 9932), (2483, 8752), (3056, 7111), (4376, 4966)]