21254325

素因数分解:

$3^1\times 5^2\times {\mathrm{53}}^1\times {\mathrm{5347}}^1$

素因数の和:5413

約数の個数: 24

約数和(自身を含む): 35810208

約数和(自身を除く): 14555883

約数列:

[1, 3, 5, 15, 25, 53, 75, 159, 265, 795, 1325, 3975, 5347, 16041, 26735, 80205, 133675, 283391, 401025, 850173, 1416955, 4250865, 7084775, 21254325]

約数ペア:

[(1, 21254325), (3, 7084775), (5, 4250865), (15, 1416955), (25, 850173), (53, 401025), (75, 283391), (159, 133675), (265, 80205), (795, 26735), (1325, 16041), (3975, 5347)]