21525128

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{971}}^1$

素因数の和:1157

約数の個数: 32

約数和(自身を含む): 43040160

約数和(自身を除く): 21515032

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 163, 326, 652, 971, 1304, 1942, 2771, 3884, 5542, 7768, 11084, 16507, 22168, 33014, 66028, 132056, 158273, 316546, 633092, 1266184, 2690641, 5381282, 10762564, 21525128]

約数ペア:

[(1, 21525128), (2, 10762564), (4, 5381282), (8, 2690641), (17, 1266184), (34, 633092), (68, 316546), (136, 158273), (163, 132056), (326, 66028), (652, 33014), (971, 22168), (1304, 16507), (1942, 11084), (2771, 7768), (3884, 5542)]