157221925

素因数分解:

$5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{397}}^1$

素因数の和:518

約数の個数: 48

約数和(自身を含む): 233731072

約数和(自身を除く): 76509147

約数列:

[1, 5, 7, 25, 31, 35, 73, 155, 175, 217, 365, 397, 511, 775, 1085, 1825, 1985, 2263, 2555, 2779, 5425, 9925, 11315, 12307, 12775, 13895, 15841, 28981, 56575, 61535, 69475, 79205, 86149, 144905, 202867, 307675, 396025, 430745, 724525, 898411, 1014335, 2153725, 4492055, 5071675, 6288877, 22460275, 31444385, 157221925]

約数ペア:

[(1, 157221925), (5, 31444385), (7, 22460275), (25, 6288877), (31, 5071675), (35, 4492055), (73, 2153725), (155, 1014335), (175, 898411), (217, 724525), (365, 430745), (397, 396025), (511, 307675), (775, 202867), (1085, 144905), (1825, 86149), (1985, 79205), (2263, 69475), (2555, 61535), (2779, 56575), (5425, 28981), (9925, 15841), (11315, 13895), (12307, 12775)]