18427175

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{59}}^1$

素因数の和:144

約数の個数: 36

約数和(自身を含む): 25857720

約数和(自身を除く): 7430545

約数列:

[1, 5, 13, 25, 31, 59, 65, 155, 295, 325, 403, 767, 775, 961, 1475, 1829, 2015, 3835, 4805, 9145, 10075, 12493, 19175, 23777, 24025, 45725, 56699, 62465, 118885, 283495, 312325, 594425, 737087, 1417475, 3685435, 18427175]

約数ペア:

[(1, 18427175), (5, 3685435), (13, 1417475), (25, 737087), (31, 594425), (59, 312325), (65, 283495), (155, 118885), (295, 62465), (325, 56699), (403, 45725), (767, 24025), (775, 23777), (961, 19175), (1475, 12493), (1829, 10075), (2015, 9145), (3835, 4805)]