20291888

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{823}}^1$

素因数の和:921

約数の個数: 40

約数和(自身を含む): 41687808

約数和(自身を除く): 21395920

約数列:

[1, 2, 4, 8, 16, 23, 46, 67, 92, 134, 184, 268, 368, 536, 823, 1072, 1541, 1646, 3082, 3292, 6164, 6584, 12328, 13168, 18929, 24656, 37858, 55141, 75716, 110282, 151432, 220564, 302864, 441128, 882256, 1268243, 2536486, 5072972, 10145944, 20291888]

約数ペア:

[(1, 20291888), (2, 10145944), (4, 5072972), (8, 2536486), (16, 1268243), (23, 882256), (46, 441128), (67, 302864), (92, 220564), (134, 151432), (184, 110282), (268, 75716), (368, 55141), (536, 37858), (823, 24656), (1072, 18929), (1541, 13168), (1646, 12328), (3082, 6584), (3292, 6164)]