19728870

素因数分解:

$2^1\times 3^1\times 5^1\times 7^2\times {\mathrm{13421}}^1$

素因数の和:13445

約数の個数: 48

約数和(自身を含む): 55083888

約数和(自身を除く): 35355018

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 49, 70, 98, 105, 147, 210, 245, 294, 490, 735, 1470, 13421, 26842, 40263, 67105, 80526, 93947, 134210, 187894, 201315, 281841, 402630, 469735, 563682, 657629, 939470, 1315258, 1409205, 1972887, 2818410, 3288145, 3945774, 6576290, 9864435, 19728870]

約数ペア:

[(1, 19728870), (2, 9864435), (3, 6576290), (5, 3945774), (6, 3288145), (7, 2818410), (10, 1972887), (14, 1409205), (15, 1315258), (21, 939470), (30, 657629), (35, 563682), (42, 469735), (49, 402630), (70, 281841), (98, 201315), (105, 187894), (147, 134210), (210, 93947), (245, 80526), (294, 67105), (490, 40263), (735, 26842), (1470, 13421)]