216528640

素因数分解:

$2^8\times 5^1\times {\mathrm{139}}^1\times {\mathrm{1217}}^1$

素因数の和:1377

約数の個数: 72

約数和(自身を含む): 522814320

約数和(自身を除く): 306285680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 139, 160, 256, 278, 320, 556, 640, 695, 1112, 1217, 1280, 1390, 2224, 2434, 2780, 4448, 4868, 5560, 6085, 8896, 9736, 11120, 12170, 17792, 19472, 22240, 24340, 35584, 38944, 44480, 48680, 77888, 88960, 97360, 155776, 169163, 177920, 194720, 311552, 338326, 389440, 676652, 778880, 845815, 1353304, 1557760, 1691630, 2706608, 3383260, 5413216, 6766520, 10826432, 13533040, 21652864, 27066080, 43305728, 54132160, 108264320, 216528640]

約数ペア:

[(1, 216528640), (2, 108264320), (4, 54132160), (5, 43305728), (8, 27066080), (10, 21652864), (16, 13533040), (20, 10826432), (32, 6766520), (40, 5413216), (64, 3383260), (80, 2706608), (128, 1691630), (139, 1557760), (160, 1353304), (256, 845815), (278, 778880), (320, 676652), (556, 389440), (640, 338326), (695, 311552), (1112, 194720), (1217, 177920), (1280, 169163), (1390, 155776), (2224, 97360), (2434, 88960), (2780, 77888), (4448, 48680), (4868, 44480), (5560, 38944), (6085, 35584), (8896, 24340), (9736, 22240), (11120, 19472), (12170, 17792)]