21795296

素因数分解:

$2^5\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{181}}^1$

素因数の和:315

約数の個数: 48

約数和(自身を含む): 44579808

約数和(自身を除く): 22784512

約数列:

[1, 2, 4, 8, 16, 32, 53, 71, 106, 142, 181, 212, 284, 362, 424, 568, 724, 848, 1136, 1448, 1696, 2272, 2896, 3763, 5792, 7526, 9593, 12851, 15052, 19186, 25702, 30104, 38372, 51404, 60208, 76744, 102808, 120416, 153488, 205616, 306976, 411232, 681103, 1362206, 2724412, 5448824, 10897648, 21795296]

約数ペア:

[(1, 21795296), (2, 10897648), (4, 5448824), (8, 2724412), (16, 1362206), (32, 681103), (53, 411232), (71, 306976), (106, 205616), (142, 153488), (181, 120416), (212, 102808), (284, 76744), (362, 60208), (424, 51404), (568, 38372), (724, 30104), (848, 25702), (1136, 19186), (1448, 15052), (1696, 12851), (2272, 9593), (2896, 7526), (3763, 5792)]