21679408

素因数分解:

$2^4\times {\mathrm{47}}^1\times {\mathrm{127}}^1\times {\mathrm{227}}^1$

素因数の和:409

約数の個数: 40

約数和(自身を含む): 43425792

約数和(自身を除く): 21746384

約数列:

[1, 2, 4, 8, 16, 47, 94, 127, 188, 227, 254, 376, 454, 508, 752, 908, 1016, 1816, 2032, 3632, 5969, 10669, 11938, 21338, 23876, 28829, 42676, 47752, 57658, 85352, 95504, 115316, 170704, 230632, 461264, 1354963, 2709926, 5419852, 10839704, 21679408]

約数ペア:

[(1, 21679408), (2, 10839704), (4, 5419852), (8, 2709926), (16, 1354963), (47, 461264), (94, 230632), (127, 170704), (188, 115316), (227, 95504), (254, 85352), (376, 57658), (454, 47752), (508, 42676), (752, 28829), (908, 23876), (1016, 21338), (1816, 11938), (2032, 10669), (3632, 5969)]