18298225

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{263}}^1$

素因数の和:318

約数の個数: 36

約数和(自身を含む): 26123328

約数和(自身を除く): 7825103

約数列:

[1, 5, 11, 23, 25, 55, 115, 121, 253, 263, 275, 575, 605, 1265, 1315, 2783, 2893, 3025, 6049, 6325, 6575, 13915, 14465, 30245, 31823, 66539, 69575, 72325, 151225, 159115, 332695, 731929, 795575, 1663475, 3659645, 18298225]

約数ペア:

[(1, 18298225), (5, 3659645), (11, 1663475), (23, 795575), (25, 731929), (55, 332695), (115, 159115), (121, 151225), (253, 72325), (263, 69575), (275, 66539), (575, 31823), (605, 30245), (1265, 14465), (1315, 13915), (2783, 6575), (2893, 6325), (3025, 6049)]