19878129

素因数分解:

$3^5\times {\mathrm{179}}^1\times {\mathrm{457}}^1$

素因数の和:651

約数の個数: 24

約数和(自身を含む): 30008160

約数和(自身を除く): 10130031

約数列:

[1, 3, 9, 27, 81, 179, 243, 457, 537, 1371, 1611, 4113, 4833, 12339, 14499, 37017, 43497, 81803, 111051, 245409, 736227, 2208681, 6626043, 19878129]

約数ペア:

[(1, 19878129), (3, 6626043), (9, 2208681), (27, 736227), (81, 245409), (179, 111051), (243, 81803), (457, 43497), (537, 37017), (1371, 14499), (1611, 12339), (4113, 4833)]