20819645

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{3181}}^1$

素因数の和:3221

約数の個数: 32

約数和(自身を含む): 32990976

約数和(自身を除く): 12171331

約数列:

[1, 5, 7, 11, 17, 35, 55, 77, 85, 119, 187, 385, 595, 935, 1309, 3181, 6545, 15905, 22267, 34991, 54077, 111335, 174955, 244937, 270385, 378539, 594847, 1224685, 1892695, 2974235, 4163929, 20819645]

約数ペア:

[(1, 20819645), (5, 4163929), (7, 2974235), (11, 1892695), (17, 1224685), (35, 594847), (55, 378539), (77, 270385), (85, 244937), (119, 174955), (187, 111335), (385, 54077), (595, 34991), (935, 22267), (1309, 15905), (3181, 6545)]