21191008

素因数分解:

$2^5\times {\mathrm{97}}^1\times {\mathrm{6827}}^1$

素因数の和:6934

約数の個数: 24

約数和(自身を含む): 42156072

約数和(自身を除く): 20965064

約数列:

[1, 2, 4, 8, 16, 32, 97, 194, 388, 776, 1552, 3104, 6827, 13654, 27308, 54616, 109232, 218464, 662219, 1324438, 2648876, 5297752, 10595504, 21191008]

約数ペア:

[(1, 21191008), (2, 10595504), (4, 5297752), (8, 2648876), (16, 1324438), (32, 662219), (97, 218464), (194, 109232), (388, 54616), (776, 27308), (1552, 13654), (3104, 6827)]