21057008

素因数分解:

$2^4\times 7^1\times {\mathrm{229}}^1\times {\mathrm{821}}^1$

素因数の和:1065

約数の個数: 40

約数和(自身を含む): 46886880

約数和(自身を除く): 25829872

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 229, 458, 821, 916, 1603, 1642, 1832, 3206, 3284, 3664, 5747, 6412, 6568, 11494, 12824, 13136, 22988, 25648, 45976, 91952, 188009, 376018, 752036, 1316063, 1504072, 2632126, 3008144, 5264252, 10528504, 21057008]

約数ペア:

[(1, 21057008), (2, 10528504), (4, 5264252), (7, 3008144), (8, 2632126), (14, 1504072), (16, 1316063), (28, 752036), (56, 376018), (112, 188009), (229, 91952), (458, 45976), (821, 25648), (916, 22988), (1603, 13136), (1642, 12824), (1832, 11494), (3206, 6568), (3284, 6412), (3664, 5747)]