15902225

素因数分解:

$5^2\times {\mathrm{17}}^2\times {\mathrm{31}}^1\times {\mathrm{71}}^1$

素因数の和:146

約数の個数: 36

約数和(自身を含む): 21927168

約数和(自身を除く): 6024943

約数列:

[1, 5, 17, 25, 31, 71, 85, 155, 289, 355, 425, 527, 775, 1207, 1445, 1775, 2201, 2635, 6035, 7225, 8959, 11005, 13175, 20519, 30175, 37417, 44795, 55025, 102595, 187085, 223975, 512975, 636089, 935425, 3180445, 15902225]

約数ペア:

[(1, 15902225), (5, 3180445), (17, 935425), (25, 636089), (31, 512975), (71, 223975), (85, 187085), (155, 102595), (289, 55025), (355, 44795), (425, 37417), (527, 30175), (775, 20519), (1207, 13175), (1445, 11005), (1775, 8959), (2201, 7225), (2635, 6035)]