28937817

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{18803}}^1$

素因数の和:18834

約数の個数: 20

約数和(自身を含む): 45505680

約数和(自身を除く): 16567863

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 18803, 56409, 169227, 357257, 507681, 1071771, 1523043, 3215313, 9645939, 28937817]

約数ペア:

[(1, 28937817), (3, 9645939), (9, 3215313), (19, 1523043), (27, 1071771), (57, 507681), (81, 357257), (171, 169227), (513, 56409), (1539, 18803)]