1680479990

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{79757}}^1$

素因数の和:79821

約数の個数: 48

約数和(自身を含む): 3600595152

約数和(自身を除く): 1920115162

約数列:

[1, 2, 5, 7, 10, 14, 35, 43, 49, 70, 86, 98, 215, 245, 301, 430, 490, 602, 1505, 2107, 3010, 4214, 10535, 21070, 79757, 159514, 398785, 558299, 797570, 1116598, 2791495, 3429551, 3908093, 5582990, 6859102, 7816186, 17147755, 19540465, 24006857, 34295510, 39080930, 48013714, 120034285, 168047999, 240068570, 336095998, 840239995, 1680479990]

約数ペア:

[(1, 1680479990), (2, 840239995), (5, 336095998), (7, 240068570), (10, 168047999), (14, 120034285), (35, 48013714), (43, 39080930), (49, 34295510), (70, 24006857), (86, 19540465), (98, 17147755), (215, 7816186), (245, 6859102), (301, 5582990), (430, 3908093), (490, 3429551), (602, 2791495), (1505, 1116598), (2107, 797570), (3010, 558299), (4214, 398785), (10535, 159514), (21070, 79757)]