131427280

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{139}}^1\times {\mathrm{223}}^1$

素因数の和:428

約数の個数: 80

約数和(自身を含む): 314979840

約数和(自身を除く): 183552560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 80, 106, 139, 212, 223, 265, 278, 424, 446, 530, 556, 695, 848, 892, 1060, 1112, 1115, 1390, 1784, 2120, 2224, 2230, 2780, 3568, 4240, 4460, 5560, 7367, 8920, 11120, 11819, 14734, 17840, 23638, 29468, 30997, 36835, 47276, 58936, 59095, 61994, 73670, 94552, 117872, 118190, 123988, 147340, 154985, 189104, 236380, 247976, 294680, 309970, 472760, 495952, 589360, 619940, 945520, 1239880, 1642841, 2479760, 3285682, 6571364, 8214205, 13142728, 16428410, 26285456, 32856820, 65713640, 131427280]

約数ペア:

[(1, 131427280), (2, 65713640), (4, 32856820), (5, 26285456), (8, 16428410), (10, 13142728), (16, 8214205), (20, 6571364), (40, 3285682), (53, 2479760), (80, 1642841), (106, 1239880), (139, 945520), (212, 619940), (223, 589360), (265, 495952), (278, 472760), (424, 309970), (446, 294680), (530, 247976), (556, 236380), (695, 189104), (848, 154985), (892, 147340), (1060, 123988), (1112, 118190), (1115, 117872), (1390, 94552), (1784, 73670), (2120, 61994), (2224, 59095), (2230, 58936), (2780, 47276), (3568, 36835), (4240, 30997), (4460, 29468), (5560, 23638), (7367, 17840), (8920, 14734), (11120, 11819)]