28391125

素因数分解:

$5^3\times 7^1\times {\mathrm{71}}^1\times {\mathrm{457}}^1$

素因数の和:550

約数の個数: 32

約数和(自身を含む): 41154048

約数和(自身を除く): 12762923

約数列:

[1, 5, 7, 25, 35, 71, 125, 175, 355, 457, 497, 875, 1775, 2285, 2485, 3199, 8875, 11425, 12425, 15995, 32447, 57125, 62125, 79975, 162235, 227129, 399875, 811175, 1135645, 4055875, 5678225, 28391125]

約数ペア:

[(1, 28391125), (5, 5678225), (7, 4055875), (25, 1135645), (35, 811175), (71, 399875), (125, 227129), (175, 162235), (355, 79975), (457, 62125), (497, 57125), (875, 32447), (1775, 15995), (2285, 12425), (2485, 11425), (3199, 8875)]