18981875

素因数分解:

$5^4\times {\mathrm{11}}^2\times {\mathrm{251}}^1$

素因数の和:293

約数の個数: 30

約数和(自身を含む): 26175996

約数和(自身を除く): 7194121

約数列:

[1, 5, 11, 25, 55, 121, 125, 251, 275, 605, 625, 1255, 1375, 2761, 3025, 6275, 6875, 13805, 15125, 30371, 31375, 69025, 75625, 151855, 156875, 345125, 759275, 1725625, 3796375, 18981875]

約数ペア:

[(1, 18981875), (5, 3796375), (11, 1725625), (25, 759275), (55, 345125), (121, 156875), (125, 151855), (251, 75625), (275, 69025), (605, 31375), (625, 30371), (1255, 15125), (1375, 13805), (2761, 6875), (3025, 6275)]