21098205

素因数分解:

$3^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{1193}}^1$

素因数の和:1338

約数の個数: 32

約数和(自身を含む): 37825920

約数和(自身を除く): 16727715

約数列:

[1, 3, 5, 9, 15, 27, 45, 131, 135, 393, 655, 1179, 1193, 1965, 3537, 3579, 5895, 5965, 10737, 17685, 17895, 32211, 53685, 156283, 161055, 468849, 781415, 1406547, 2344245, 4219641, 7032735, 21098205]

約数ペア:

[(1, 21098205), (3, 7032735), (5, 4219641), (9, 2344245), (15, 1406547), (27, 781415), (45, 468849), (131, 161055), (135, 156283), (393, 53685), (655, 32211), (1179, 17895), (1193, 17685), (1965, 10737), (3537, 5965), (3579, 5895)]