21474475

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{229}}^1$

素因数の和:292

約数の個数: 36

約数和(自身を含む): 30345280

約数和(自身を除く): 8870805

約数列:

[1, 5, 11, 25, 31, 55, 121, 155, 229, 275, 341, 605, 775, 1145, 1705, 2519, 3025, 3751, 5725, 7099, 8525, 12595, 18755, 27709, 35495, 62975, 78089, 93775, 138545, 177475, 390445, 692725, 858979, 1952225, 4294895, 21474475]

約数ペア:

[(1, 21474475), (5, 4294895), (11, 1952225), (25, 858979), (31, 692725), (55, 390445), (121, 177475), (155, 138545), (229, 93775), (275, 78089), (341, 62975), (605, 35495), (775, 27709), (1145, 18755), (1705, 12595), (2519, 8525), (3025, 7099), (3751, 5725)]