20264355

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{173}}^1$

素因数の和:340

約数の個数: 48

約数和(自身を含む): 37458720

約数和(自身を除く): 17194365

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 137, 171, 173, 285, 411, 519, 685, 855, 865, 1233, 1557, 2055, 2595, 2603, 3287, 6165, 7785, 7809, 9861, 13015, 16435, 23427, 23701, 29583, 39045, 49305, 71103, 117135, 118505, 147915, 213309, 355515, 450319, 1066545, 1350957, 2251595, 4052871, 6754785, 20264355]

約数ペア:

[(1, 20264355), (3, 6754785), (5, 4052871), (9, 2251595), (15, 1350957), (19, 1066545), (45, 450319), (57, 355515), (95, 213309), (137, 147915), (171, 118505), (173, 117135), (285, 71103), (411, 49305), (519, 39045), (685, 29583), (855, 23701), (865, 23427), (1233, 16435), (1557, 13015), (2055, 9861), (2595, 7809), (2603, 7785), (3287, 6165)]