21511768

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{683}}^1$

素因数の和:847

約数の個数: 32

約数和(自身を含む): 42024960

約数和(自身を除く): 20513192

約数列:

[1, 2, 4, 8, 31, 62, 124, 127, 248, 254, 508, 683, 1016, 1366, 2732, 3937, 5464, 7874, 15748, 21173, 31496, 42346, 84692, 86741, 169384, 173482, 346964, 693928, 2688971, 5377942, 10755884, 21511768]

約数ペア:

[(1, 21511768), (2, 10755884), (4, 5377942), (8, 2688971), (31, 693928), (62, 346964), (124, 173482), (127, 169384), (248, 86741), (254, 84692), (508, 42346), (683, 31496), (1016, 21173), (1366, 15748), (2732, 7874), (3937, 5464)]