21708464

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{227}}^1$

素因数の和:417

約数の個数: 40

約数和(自身を含む): 43538880

約数和(自身を除く): 21830416

約数列:

[1, 2, 4, 8, 16, 43, 86, 139, 172, 227, 278, 344, 454, 556, 688, 908, 1112, 1816, 2224, 3632, 5977, 9761, 11954, 19522, 23908, 31553, 39044, 47816, 63106, 78088, 95632, 126212, 156176, 252424, 504848, 1356779, 2713558, 5427116, 10854232, 21708464]

約数ペア:

[(1, 21708464), (2, 10854232), (4, 5427116), (8, 2713558), (16, 1356779), (43, 504848), (86, 252424), (139, 156176), (172, 126212), (227, 95632), (278, 78088), (344, 63106), (454, 47816), (556, 39044), (688, 31553), (908, 23908), (1112, 19522), (1816, 11954), (2224, 9761), (3632, 5977)]