18529225

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1$

素因数の和:178

約数の個数: 48

約数和(自身を含む): 27748224

約数和(自身を除く): 9218999

約数列:

[1, 5, 11, 13, 25, 55, 65, 71, 73, 143, 275, 325, 355, 365, 715, 781, 803, 923, 949, 1775, 1825, 3575, 3905, 4015, 4615, 4745, 5183, 10153, 10439, 19525, 20075, 23075, 23725, 25915, 50765, 52195, 57013, 67379, 129575, 253825, 260975, 285065, 336895, 741169, 1425325, 1684475, 3705845, 18529225]

約数ペア:

[(1, 18529225), (5, 3705845), (11, 1684475), (13, 1425325), (25, 741169), (55, 336895), (65, 285065), (71, 260975), (73, 253825), (143, 129575), (275, 67379), (325, 57013), (355, 52195), (365, 50765), (715, 25915), (781, 23725), (803, 23075), (923, 20075), (949, 19525), (1775, 10439), (1825, 10153), (3575, 5183), (3905, 4745), (4015, 4615)]