20895868

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{457}}^1$

素因数の和:562

約数の個数: 48

約数和(自身を含む): 44319744

約数和(自身を除く): 23423876

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 71, 92, 142, 161, 284, 322, 457, 497, 644, 914, 994, 1633, 1828, 1988, 3199, 3266, 6398, 6532, 10511, 11431, 12796, 21022, 22862, 32447, 42044, 45724, 64894, 73577, 129788, 147154, 227129, 294308, 454258, 746281, 908516, 1492562, 2985124, 5223967, 10447934, 20895868]

約数ペア:

[(1, 20895868), (2, 10447934), (4, 5223967), (7, 2985124), (14, 1492562), (23, 908516), (28, 746281), (46, 454258), (71, 294308), (92, 227129), (142, 147154), (161, 129788), (284, 73577), (322, 64894), (457, 45724), (497, 42044), (644, 32447), (914, 22862), (994, 21022), (1633, 12796), (1828, 11431), (1988, 10511), (3199, 6532), (3266, 6398)]