19981024

素因数分解:

$2^5\times 7^2\times {\mathrm{12743}}^1$

素因数の和:12767

約数の個数: 36

約数和(自身を含む): 45763704

約数和(自身を除く): 25782680

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 98, 112, 196, 224, 392, 784, 1568, 12743, 25486, 50972, 89201, 101944, 178402, 203888, 356804, 407776, 624407, 713608, 1248814, 1427216, 2497628, 2854432, 4995256, 9990512, 19981024]

約数ペア:

[(1, 19981024), (2, 9990512), (4, 4995256), (7, 2854432), (8, 2497628), (14, 1427216), (16, 1248814), (28, 713608), (32, 624407), (49, 407776), (56, 356804), (98, 203888), (112, 178402), (196, 101944), (224, 89201), (392, 50972), (784, 25486), (1568, 12743)]