19477990

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{127}}^1\times {\mathrm{313}}^1$

素因数の和:461

約数の個数: 48

約数和(自身を含む): 41236992

約数和(自身を除く): 21759002

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 127, 245, 254, 313, 490, 626, 635, 889, 1270, 1565, 1778, 2191, 3130, 4382, 4445, 6223, 8890, 10955, 12446, 15337, 21910, 30674, 31115, 39751, 62230, 76685, 79502, 153370, 198755, 278257, 397510, 556514, 1391285, 1947799, 2782570, 3895598, 9738995, 19477990]

約数ペア:

[(1, 19477990), (2, 9738995), (5, 3895598), (7, 2782570), (10, 1947799), (14, 1391285), (35, 556514), (49, 397510), (70, 278257), (98, 198755), (127, 153370), (245, 79502), (254, 76685), (313, 62230), (490, 39751), (626, 31115), (635, 30674), (889, 21910), (1270, 15337), (1565, 12446), (1778, 10955), (2191, 8890), (3130, 6223), (4382, 4445)]