20519380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{1511}}^1$

素因数の和:1624

約数の個数: 48

約数和(自身を含む): 49787136

約数和(自身を除く): 29267756

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 97, 140, 194, 388, 485, 679, 970, 1358, 1511, 1940, 2716, 3022, 3395, 6044, 6790, 7555, 10577, 13580, 15110, 21154, 30220, 42308, 52885, 105770, 146567, 211540, 293134, 586268, 732835, 1025969, 1465670, 2051938, 2931340, 4103876, 5129845, 10259690, 20519380]

約数ペア:

[(1, 20519380), (2, 10259690), (4, 5129845), (5, 4103876), (7, 2931340), (10, 2051938), (14, 1465670), (20, 1025969), (28, 732835), (35, 586268), (70, 293134), (97, 211540), (140, 146567), (194, 105770), (388, 52885), (485, 42308), (679, 30220), (970, 21154), (1358, 15110), (1511, 13580), (1940, 10577), (2716, 7555), (3022, 6790), (3395, 6044)]