21661216

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{1549}}^1$

素因数の和:1601

約数の個数: 48

約数和(自身を含む): 46872000

約数和(自身を除く): 25210784

約数列:

[1, 2, 4, 8, 16, 19, 23, 32, 38, 46, 76, 92, 152, 184, 304, 368, 437, 608, 736, 874, 1549, 1748, 3098, 3496, 6196, 6992, 12392, 13984, 24784, 29431, 35627, 49568, 58862, 71254, 117724, 142508, 235448, 285016, 470896, 570032, 676913, 941792, 1140064, 1353826, 2707652, 5415304, 10830608, 21661216]

約数ペア:

[(1, 21661216), (2, 10830608), (4, 5415304), (8, 2707652), (16, 1353826), (19, 1140064), (23, 941792), (32, 676913), (38, 570032), (46, 470896), (76, 285016), (92, 235448), (152, 142508), (184, 117724), (304, 71254), (368, 58862), (437, 49568), (608, 35627), (736, 29431), (874, 24784), (1549, 13984), (1748, 12392), (3098, 6992), (3496, 6196)]