21470235

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{269}}^1\times {\mathrm{313}}^1$

素因数の和:607

約数の個数: 32

約数和(自身を含む): 36624960

約数和(自身を除く): 15154725

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 269, 313, 807, 939, 1345, 1565, 4035, 4573, 4695, 5321, 13719, 15963, 22865, 26605, 68595, 79815, 84197, 252591, 420985, 1262955, 1431349, 4294047, 7156745, 21470235]

約数ペア:

[(1, 21470235), (3, 7156745), (5, 4294047), (15, 1431349), (17, 1262955), (51, 420985), (85, 252591), (255, 84197), (269, 79815), (313, 68595), (807, 26605), (939, 22865), (1345, 15963), (1565, 13719), (4035, 5321), (4573, 4695)]