21290896

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{883}}^1$

素因数の和:1039

約数の個数: 40

約数和(自身を含む): 45381024

約数和(自身を除く): 24090128

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 137, 176, 274, 548, 883, 1096, 1507, 1766, 2192, 3014, 3532, 6028, 7064, 9713, 12056, 14128, 19426, 24112, 38852, 77704, 120971, 155408, 241942, 483884, 967768, 1330681, 1935536, 2661362, 5322724, 10645448, 21290896]

約数ペア:

[(1, 21290896), (2, 10645448), (4, 5322724), (8, 2661362), (11, 1935536), (16, 1330681), (22, 967768), (44, 483884), (88, 241942), (137, 155408), (176, 120971), (274, 77704), (548, 38852), (883, 24112), (1096, 19426), (1507, 14128), (1766, 12056), (2192, 9713), (3014, 7064), (3532, 6028)]