18809385

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{157}}^1\times {\mathrm{163}}^1$

素因数の和:342

約数の個数: 48

約数和(自身を含む): 35447616

約数和(自身を除く): 16638231

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 157, 163, 245, 471, 489, 735, 785, 815, 1099, 1141, 2355, 2445, 3297, 3423, 5495, 5705, 7693, 7987, 16485, 17115, 23079, 23961, 25591, 38465, 39935, 76773, 115395, 119805, 127955, 179137, 383865, 537411, 895685, 1253959, 2687055, 3761877, 6269795, 18809385]

約数ペア:

[(1, 18809385), (3, 6269795), (5, 3761877), (7, 2687055), (15, 1253959), (21, 895685), (35, 537411), (49, 383865), (105, 179137), (147, 127955), (157, 119805), (163, 115395), (245, 76773), (471, 39935), (489, 38465), (735, 25591), (785, 23961), (815, 23079), (1099, 17115), (1141, 16485), (2355, 7987), (2445, 7693), (3297, 5705), (3423, 5495)]