21059885

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2879}}^1$

素因数の和:2921

約数の個数: 32

約数和(自身を含む): 33177600

約数和(自身を除く): 12117715

約数列:

[1, 5, 7, 11, 19, 35, 55, 77, 95, 133, 209, 385, 665, 1045, 1463, 2879, 7315, 14395, 20153, 31669, 54701, 100765, 158345, 221683, 273505, 382907, 601711, 1108415, 1914535, 3008555, 4211977, 21059885]

約数ペア:

[(1, 21059885), (5, 4211977), (7, 3008555), (11, 1914535), (19, 1108415), (35, 601711), (55, 382907), (77, 273505), (95, 221683), (133, 158345), (209, 100765), (385, 54701), (665, 31669), (1045, 20153), (1463, 14395), (2879, 7315)]