21153232

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{467}}^1$

素因数の和:643

約数の個数: 40

約数和(自身を含む): 43524000

約数和(自身を除く): 22370768

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 149, 152, 298, 304, 467, 596, 934, 1192, 1868, 2384, 2831, 3736, 5662, 7472, 8873, 11324, 17746, 22648, 35492, 45296, 69583, 70984, 139166, 141968, 278332, 556664, 1113328, 1322077, 2644154, 5288308, 10576616, 21153232]

約数ペア:

[(1, 21153232), (2, 10576616), (4, 5288308), (8, 2644154), (16, 1322077), (19, 1113328), (38, 556664), (76, 278332), (149, 141968), (152, 139166), (298, 70984), (304, 69583), (467, 45296), (596, 35492), (934, 22648), (1192, 17746), (1868, 11324), (2384, 8873), (2831, 7472), (3736, 5662)]