19878285

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{31}}^2\times {\mathrm{197}}^1$

素因数の和:274

約数の個数: 48

約数和(自身を含む): 37749888

約数和(自身を除く): 17871603

約数列:

[1, 3, 5, 7, 15, 21, 31, 35, 93, 105, 155, 197, 217, 465, 591, 651, 961, 985, 1085, 1379, 2883, 2955, 3255, 4137, 4805, 6107, 6727, 6895, 14415, 18321, 20181, 20685, 30535, 33635, 42749, 91605, 100905, 128247, 189317, 213745, 567951, 641235, 946585, 1325219, 2839755, 3975657, 6626095, 19878285]

約数ペア:

[(1, 19878285), (3, 6626095), (5, 3975657), (7, 2839755), (15, 1325219), (21, 946585), (31, 641235), (35, 567951), (93, 213745), (105, 189317), (155, 128247), (197, 100905), (217, 91605), (465, 42749), (591, 33635), (651, 30535), (961, 20685), (985, 20181), (1085, 18321), (1379, 14415), (2883, 6895), (2955, 6727), (3255, 6107), (4137, 4805)]