661443125

素因数分解:

$5^4\times 7^1\times {\mathrm{31}}^1\times {\mathrm{4877}}^1$

素因数の和:4935

約数の個数: 40

約数和(自身を含む): 975287808

約数和(自身を除く): 313844683

約数列:

[1, 5, 7, 25, 31, 35, 125, 155, 175, 217, 625, 775, 875, 1085, 3875, 4375, 4877, 5425, 19375, 24385, 27125, 34139, 121925, 135625, 151187, 170695, 609625, 755935, 853475, 1058309, 3048125, 3779675, 4267375, 5291545, 18898375, 21336875, 26457725, 94491875, 132288625, 661443125]

約数ペア:

[(1, 661443125), (5, 132288625), (7, 94491875), (25, 26457725), (31, 21336875), (35, 18898375), (125, 5291545), (155, 4267375), (175, 3779675), (217, 3048125), (625, 1058309), (775, 853475), (875, 755935), (1085, 609625), (3875, 170695), (4375, 151187), (4877, 135625), (5425, 121925), (19375, 34139), (24385, 27125)]