21941395

素因数分解:

$5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{239}}^1$

素因数の和:355

約数の個数: 32

約数和(自身を含む): 31426560

約数和(自身を除く): 9485165

約数列:

[1, 5, 7, 35, 43, 61, 215, 239, 301, 305, 427, 1195, 1505, 1673, 2135, 2623, 8365, 10277, 13115, 14579, 18361, 51385, 71939, 72895, 91805, 102053, 359695, 510265, 626897, 3134485, 4388279, 21941395]

約数ペア:

[(1, 21941395), (5, 4388279), (7, 3134485), (35, 626897), (43, 510265), (61, 359695), (215, 102053), (239, 91805), (301, 72895), (305, 71939), (427, 51385), (1195, 18361), (1505, 14579), (1673, 13115), (2135, 10277), (2623, 8365)]