20994032

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{641}}^1$

素因数の和:761

約数の個数: 40

約数和(自身を含む): 42988320

約数和(自身を除く): 21994288

約数列:

[1, 2, 4, 8, 16, 23, 46, 89, 92, 178, 184, 356, 368, 641, 712, 1282, 1424, 2047, 2564, 4094, 5128, 8188, 10256, 14743, 16376, 29486, 32752, 57049, 58972, 114098, 117944, 228196, 235888, 456392, 912784, 1312127, 2624254, 5248508, 10497016, 20994032]

約数ペア:

[(1, 20994032), (2, 10497016), (4, 5248508), (8, 2624254), (16, 1312127), (23, 912784), (46, 456392), (89, 235888), (92, 228196), (178, 117944), (184, 114098), (356, 58972), (368, 57049), (641, 32752), (712, 29486), (1282, 16376), (1424, 14743), (2047, 10256), (2564, 8188), (4094, 5128)]