21402080

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{197}}^1$

素因数の和:316

約数の個数: 96

約数和(自身を含む): 58677696

約数和(自身を除く): 37275616

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 97, 112, 140, 160, 194, 197, 224, 280, 388, 394, 485, 560, 679, 776, 788, 970, 985, 1120, 1358, 1379, 1552, 1576, 1940, 1970, 2716, 2758, 3104, 3152, 3395, 3880, 3940, 5432, 5516, 6304, 6790, 6895, 7760, 7880, 10864, 11032, 13580, 13790, 15520, 15760, 19109, 21728, 22064, 27160, 27580, 31520, 38218, 44128, 54320, 55160, 76436, 95545, 108640, 110320, 133763, 152872, 191090, 220640, 267526, 305744, 382180, 535052, 611488, 668815, 764360, 1070104, 1337630, 1528720, 2140208, 2675260, 3057440, 4280416, 5350520, 10701040, 21402080]

約数ペア:

[(1, 21402080), (2, 10701040), (4, 5350520), (5, 4280416), (7, 3057440), (8, 2675260), (10, 2140208), (14, 1528720), (16, 1337630), (20, 1070104), (28, 764360), (32, 668815), (35, 611488), (40, 535052), (56, 382180), (70, 305744), (80, 267526), (97, 220640), (112, 191090), (140, 152872), (160, 133763), (194, 110320), (197, 108640), (224, 95545), (280, 76436), (388, 55160), (394, 54320), (485, 44128), (560, 38218), (679, 31520), (776, 27580), (788, 27160), (970, 22064), (985, 21728), (1120, 19109), (1358, 15760), (1379, 15520), (1552, 13790), (1576, 13580), (1940, 11032), (1970, 10864), (2716, 7880), (2758, 7760), (3104, 6895), (3152, 6790), (3395, 6304), (3880, 5516), (3940, 5432)]