19892144

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{997}}^1$

素因数の和:1077

約数の個数: 40

約数和(自身を含む): 40838160

約数和(自身を除く): 20946016

約数列:

[1, 2, 4, 8, 16, 29, 43, 58, 86, 116, 172, 232, 344, 464, 688, 997, 1247, 1994, 2494, 3988, 4988, 7976, 9976, 15952, 19952, 28913, 42871, 57826, 85742, 115652, 171484, 231304, 342968, 462608, 685936, 1243259, 2486518, 4973036, 9946072, 19892144]

約数ペア:

[(1, 19892144), (2, 9946072), (4, 4973036), (8, 2486518), (16, 1243259), (29, 685936), (43, 462608), (58, 342968), (86, 231304), (116, 171484), (172, 115652), (232, 85742), (344, 57826), (464, 42871), (688, 28913), (997, 19952), (1247, 15952), (1994, 9976), (2494, 7976), (3988, 4988)]