28640125

素因数分解:

$5^3\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{389}}^1$

素因数の和:454

約数の個数: 32

約数和(自身を含む): 38937600

約数和(自身を除く): 10297475

約数列:

[1, 5, 19, 25, 31, 95, 125, 155, 389, 475, 589, 775, 1945, 2375, 2945, 3875, 7391, 9725, 12059, 14725, 36955, 48625, 60295, 73625, 184775, 229121, 301475, 923875, 1145605, 1507375, 5728025, 28640125]

約数ペア:

[(1, 28640125), (5, 5728025), (19, 1507375), (25, 1145605), (31, 923875), (95, 301475), (125, 229121), (155, 184775), (389, 73625), (475, 60295), (589, 48625), (775, 36955), (1945, 14725), (2375, 12059), (2945, 9725), (3875, 7391)]