21417255

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{20693}}^1$

素因数の和:20727

約数の個数: 24

約数和(自身を含む): 38739168

約数和(自身を除く): 17321913

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 115, 207, 345, 1035, 20693, 62079, 103465, 186237, 310395, 475939, 931185, 1427817, 2379695, 4283451, 7139085, 21417255]

約数ペア:

[(1, 21417255), (3, 7139085), (5, 4283451), (9, 2379695), (15, 1427817), (23, 931185), (45, 475939), (69, 310395), (115, 186237), (207, 103465), (345, 62079), (1035, 20693)]