21959497

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{229}}^1$

素因数の和:365

約数の個数: 24

約数和(自身を含む): 27268800

約数和(自身を除く): 5309303

約数列:

[1, 7, 19, 49, 103, 133, 229, 721, 931, 1603, 1957, 4351, 5047, 11221, 13699, 23587, 30457, 95893, 165109, 213199, 448153, 1155763, 3137071, 21959497]

約数ペア:

[(1, 21959497), (7, 3137071), (19, 1155763), (49, 448153), (103, 213199), (133, 165109), (229, 95893), (721, 30457), (931, 23587), (1603, 13699), (1957, 11221), (4351, 5047)]