21704536

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{20399}}^1$

素因数の和:20431

約数の個数: 32

約数和(自身を含む): 48960000

約数和(自身を除く): 27255464

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 56, 76, 133, 152, 266, 532, 1064, 20399, 40798, 81596, 142793, 163192, 285586, 387581, 571172, 775162, 1142344, 1550324, 2713067, 3100648, 5426134, 10852268, 21704536]

約数ペア:

[(1, 21704536), (2, 10852268), (4, 5426134), (7, 3100648), (8, 2713067), (14, 1550324), (19, 1142344), (28, 775162), (38, 571172), (56, 387581), (76, 285586), (133, 163192), (152, 142793), (266, 81596), (532, 40798), (1064, 20399)]