19795825

素因数分解:

$5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1$

素因数の和:178

約数の個数: 48

約数和(自身を含む): 29998080

約数和(自身を除く): 10202255

約数列:

[1, 5, 7, 25, 31, 35, 41, 89, 155, 175, 205, 217, 287, 445, 623, 775, 1025, 1085, 1271, 1435, 2225, 2759, 3115, 3649, 5425, 6355, 7175, 8897, 13795, 15575, 18245, 19313, 25543, 31775, 44485, 68975, 91225, 96565, 113119, 127715, 222425, 482825, 565595, 638575, 791833, 2827975, 3959165, 19795825]

約数ペア:

[(1, 19795825), (5, 3959165), (7, 2827975), (25, 791833), (31, 638575), (35, 565595), (41, 482825), (89, 222425), (155, 127715), (175, 113119), (205, 96565), (217, 91225), (287, 68975), (445, 44485), (623, 31775), (775, 25543), (1025, 19313), (1085, 18245), (1271, 15575), (1435, 13795), (2225, 8897), (2759, 7175), (3115, 6355), (3649, 5425)]