21139072

素因数分解:

$2^7\times {\mathrm{239}}^1\times {\mathrm{691}}^1$

素因数の和:944

約数の個数: 32

約数和(自身を含む): 42350400

約数和(自身を除く): 21211328

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 239, 478, 691, 956, 1382, 1912, 2764, 3824, 5528, 7648, 11056, 15296, 22112, 30592, 44224, 88448, 165149, 330298, 660596, 1321192, 2642384, 5284768, 10569536, 21139072]

約数ペア:

[(1, 21139072), (2, 10569536), (4, 5284768), (8, 2642384), (16, 1321192), (32, 660596), (64, 330298), (128, 165149), (239, 88448), (478, 44224), (691, 30592), (956, 22112), (1382, 15296), (1912, 11056), (2764, 7648), (3824, 5528)]