18791115

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{251}}^1$

素因数の和:320

約数の個数: 64

約数和(自身を含む): 37158912

約数和(自身を除く): 18367797

約数列:

[1, 3, 5, 7, 15, 21, 23, 31, 35, 69, 93, 105, 115, 155, 161, 217, 251, 345, 465, 483, 651, 713, 753, 805, 1085, 1255, 1757, 2139, 2415, 3255, 3565, 3765, 4991, 5271, 5773, 7781, 8785, 10695, 14973, 17319, 23343, 24955, 26355, 28865, 38905, 40411, 54467, 74865, 86595, 116715, 121233, 163401, 178963, 202055, 272335, 536889, 606165, 817005, 894815, 1252741, 2684445, 3758223, 6263705, 18791115]

約数ペア:

[(1, 18791115), (3, 6263705), (5, 3758223), (7, 2684445), (15, 1252741), (21, 894815), (23, 817005), (31, 606165), (35, 536889), (69, 272335), (93, 202055), (105, 178963), (115, 163401), (155, 121233), (161, 116715), (217, 86595), (251, 74865), (345, 54467), (465, 40411), (483, 38905), (651, 28865), (713, 26355), (753, 24955), (805, 23343), (1085, 17319), (1255, 14973), (1757, 10695), (2139, 8785), (2415, 7781), (3255, 5773), (3565, 5271), (3765, 4991)]