19710505490

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{220057}}^1$

素因数の和:220143

約数の個数: 48

約数和(自身を含む): 39143036808

約数和(自身を除く): 19432531318

約数列:

[1, 2, 5, 10, 13, 26, 53, 65, 106, 130, 169, 265, 338, 530, 689, 845, 1378, 1690, 3445, 6890, 8957, 17914, 44785, 89570, 220057, 440114, 1100285, 2200570, 2860741, 5721482, 11663021, 14303705, 23326042, 28607410, 37189633, 58315105, 74379266, 116630210, 151619273, 185948165, 303238546, 371896330, 758096365, 1516192730, 1971050549, 3942101098, 9855252745, 19710505490]

約数ペア:

[(1, 19710505490), (2, 9855252745), (5, 3942101098), (10, 1971050549), (13, 1516192730), (26, 758096365), (53, 371896330), (65, 303238546), (106, 185948165), (130, 151619273), (169, 116630210), (265, 74379266), (338, 58315105), (530, 37189633), (689, 28607410), (845, 23326042), (1378, 14303705), (1690, 11663021), (3445, 5721482), (6890, 2860741), (8957, 2200570), (17914, 1100285), (44785, 440114), (89570, 220057)]