21605878

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{3947}}^1$

素因数の和:3996

約数の個数: 32

約数和(自身を含む): 40932864

約数和(自身を除く): 19326986

約数列:

[1, 2, 7, 14, 17, 23, 34, 46, 119, 161, 238, 322, 391, 782, 2737, 3947, 5474, 7894, 27629, 55258, 67099, 90781, 134198, 181562, 469693, 635467, 939386, 1270934, 1543277, 3086554, 10802939, 21605878]

約数ペア:

[(1, 21605878), (2, 10802939), (7, 3086554), (14, 1543277), (17, 1270934), (23, 939386), (34, 635467), (46, 469693), (119, 181562), (161, 134198), (238, 90781), (322, 67099), (391, 55258), (782, 27629), (2737, 7894), (3947, 5474)]