21504140

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{21943}}^1$

素因数の和:21966

約数の個数: 36

約数和(自身を含む): 52533936

約数和(自身を除く): 31029796

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 21943, 43886, 87772, 109715, 153601, 219430, 307202, 438860, 614404, 768005, 1075207, 1536010, 2150414, 3072020, 4300828, 5376035, 10752070, 21504140]

約数ペア:

[(1, 21504140), (2, 10752070), (4, 5376035), (5, 4300828), (7, 3072020), (10, 2150414), (14, 1536010), (20, 1075207), (28, 768005), (35, 614404), (49, 438860), (70, 307202), (98, 219430), (140, 153601), (196, 109715), (245, 87772), (490, 43886), (980, 21943)]