27987575

素因数分解:

$5^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1$

素因数の和:133

約数の個数: 72

約数和(自身を含む): 46139904

約数和(自身を除く): 18152329

約数列:

[1, 5, 7, 11, 25, 31, 35, 49, 55, 67, 77, 155, 175, 217, 245, 275, 335, 341, 385, 469, 539, 737, 775, 1085, 1225, 1519, 1675, 1705, 1925, 2077, 2345, 2387, 2695, 3283, 3685, 5159, 5425, 7595, 8525, 10385, 11725, 11935, 13475, 14539, 16415, 16709, 18425, 22847, 25795, 36113, 37975, 51925, 59675, 72695, 82075, 83545, 101773, 114235, 128975, 159929, 180565, 363475, 417725, 508865, 571175, 799645, 902825, 1119503, 2544325, 3998225, 5597515, 27987575]

約数ペア:

[(1, 27987575), (5, 5597515), (7, 3998225), (11, 2544325), (25, 1119503), (31, 902825), (35, 799645), (49, 571175), (55, 508865), (67, 417725), (77, 363475), (155, 180565), (175, 159929), (217, 128975), (245, 114235), (275, 101773), (335, 83545), (341, 82075), (385, 72695), (469, 59675), (539, 51925), (737, 37975), (775, 36113), (1085, 25795), (1225, 22847), (1519, 18425), (1675, 16709), (1705, 16415), (1925, 14539), (2077, 13475), (2345, 11935), (2387, 11725), (2695, 10385), (3283, 8525), (3685, 7595), (5159, 5425)]