21837095

素因数分解:

$5^1\times 7^4\times {\mathrm{17}}^1\times {\mathrm{107}}^1$

素因数の和:157

約数の個数: 40

約数和(自身を含む): 32670864

約数和(自身を除く): 10833769

約数列:

[1, 5, 7, 17, 35, 49, 85, 107, 119, 245, 343, 535, 595, 749, 833, 1715, 1819, 2401, 3745, 4165, 5243, 5831, 9095, 12005, 12733, 26215, 29155, 36701, 40817, 63665, 89131, 183505, 204085, 256907, 445655, 623917, 1284535, 3119585, 4367419, 21837095]

約数ペア:

[(1, 21837095), (5, 4367419), (7, 3119585), (17, 1284535), (35, 623917), (49, 445655), (85, 256907), (107, 204085), (119, 183505), (245, 89131), (343, 63665), (535, 40817), (595, 36701), (749, 29155), (833, 26215), (1715, 12733), (1819, 12005), (2401, 9095), (3745, 5831), (4165, 5243)]