19704580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{1451}}^1$

素因数の和:1564

約数の個数: 48

約数和(自身を含む): 47811456

約数和(自身を除く): 28106876

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 97, 140, 194, 388, 485, 679, 970, 1358, 1451, 1940, 2716, 2902, 3395, 5804, 6790, 7255, 10157, 13580, 14510, 20314, 29020, 40628, 50785, 101570, 140747, 203140, 281494, 562988, 703735, 985229, 1407470, 1970458, 2814940, 3940916, 4926145, 9852290, 19704580]

約数ペア:

[(1, 19704580), (2, 9852290), (4, 4926145), (5, 3940916), (7, 2814940), (10, 1970458), (14, 1407470), (20, 985229), (28, 703735), (35, 562988), (70, 281494), (97, 203140), (140, 140747), (194, 101570), (388, 50785), (485, 40628), (679, 29020), (970, 20314), (1358, 14510), (1451, 13580), (1940, 10157), (2716, 7255), (2902, 6790), (3395, 5804)]