2153725

素因数分解:

$5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{397}}^1$

素因数の和:445

約数の個数: 24

約数和(自身を含む): 3158528

約数和(自身を除く): 1004803

約数列:

[1, 5, 7, 25, 31, 35, 155, 175, 217, 397, 775, 1085, 1985, 2779, 5425, 9925, 12307, 13895, 61535, 69475, 86149, 307675, 430745, 2153725]

約数ペア:

[(1, 2153725), (5, 430745), (7, 307675), (25, 86149), (31, 69475), (35, 61535), (155, 13895), (175, 12307), (217, 9925), (397, 5425), (775, 2779), (1085, 1985)]