20345920

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{293}}^1$

素因数の和:348

約数の個数: 112

約数和(自身を含む): 57351168

約数和(自身を除く): 37005248

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 40, 56, 62, 64, 70, 80, 112, 124, 140, 155, 160, 217, 224, 248, 280, 293, 310, 320, 434, 448, 496, 560, 586, 620, 868, 992, 1085, 1120, 1172, 1240, 1465, 1736, 1984, 2051, 2170, 2240, 2344, 2480, 2930, 3472, 4102, 4340, 4688, 4960, 5860, 6944, 8204, 8680, 9083, 9376, 9920, 10255, 11720, 13888, 16408, 17360, 18166, 18752, 20510, 23440, 32816, 34720, 36332, 41020, 45415, 46880, 63581, 65632, 69440, 72664, 82040, 90830, 93760, 127162, 131264, 145328, 164080, 181660, 254324, 290656, 317905, 328160, 363320, 508648, 581312, 635810, 656320, 726640, 1017296, 1271620, 1453280, 2034592, 2543240, 2906560, 4069184, 5086480, 10172960, 20345920]

約数ペア:

[(1, 20345920), (2, 10172960), (4, 5086480), (5, 4069184), (7, 2906560), (8, 2543240), (10, 2034592), (14, 1453280), (16, 1271620), (20, 1017296), (28, 726640), (31, 656320), (32, 635810), (35, 581312), (40, 508648), (56, 363320), (62, 328160), (64, 317905), (70, 290656), (80, 254324), (112, 181660), (124, 164080), (140, 145328), (155, 131264), (160, 127162), (217, 93760), (224, 90830), (248, 82040), (280, 72664), (293, 69440), (310, 65632), (320, 63581), (434, 46880), (448, 45415), (496, 41020), (560, 36332), (586, 34720), (620, 32816), (868, 23440), (992, 20510), (1085, 18752), (1120, 18166), (1172, 17360), (1240, 16408), (1465, 13888), (1736, 11720), (1984, 10255), (2051, 9920), (2170, 9376), (2240, 9083), (2344, 8680), (2480, 8204), (2930, 6944), (3472, 5860), (4102, 4960), (4340, 4688)]