21672840

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{25801}}^1$

素因数の和:25822

約数の個数: 64

約数和(自身を含む): 74309760

約数和(自身を除く): 52636920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 25801, 51602, 77403, 103204, 129005, 154806, 180607, 206408, 258010, 309612, 361214, 387015, 516020, 541821, 619224, 722428, 774030, 903035, 1032040, 1083642, 1444856, 1548060, 1806070, 2167284, 2709105, 3096120, 3612140, 4334568, 5418210, 7224280, 10836420, 21672840]

約数ペア:

[(1, 21672840), (2, 10836420), (3, 7224280), (4, 5418210), (5, 4334568), (6, 3612140), (7, 3096120), (8, 2709105), (10, 2167284), (12, 1806070), (14, 1548060), (15, 1444856), (20, 1083642), (21, 1032040), (24, 903035), (28, 774030), (30, 722428), (35, 619224), (40, 541821), (42, 516020), (56, 387015), (60, 361214), (70, 309612), (84, 258010), (105, 206408), (120, 180607), (140, 154806), (168, 129005), (210, 103204), (280, 77403), (420, 51602), (840, 25801)]