21050864

素因数分解:

$2^4\times {\mathrm{67}}^1\times {\mathrm{73}}^1\times {\mathrm{269}}^1$

素因数の和:417

約数の個数: 40

約数和(自身を含む): 42117840

約数和(自身を除く): 21066976

約数列:

[1, 2, 4, 8, 16, 67, 73, 134, 146, 268, 269, 292, 536, 538, 584, 1072, 1076, 1168, 2152, 4304, 4891, 9782, 18023, 19564, 19637, 36046, 39128, 39274, 72092, 78256, 78548, 144184, 157096, 288368, 314192, 1315679, 2631358, 5262716, 10525432, 21050864]

約数ペア:

[(1, 21050864), (2, 10525432), (4, 5262716), (8, 2631358), (16, 1315679), (67, 314192), (73, 288368), (134, 157096), (146, 144184), (268, 78548), (269, 78256), (292, 72092), (536, 39274), (538, 39128), (584, 36046), (1072, 19637), (1076, 19564), (1168, 18023), (2152, 9782), (4304, 4891)]