80530940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{4391}}^1$

素因数の和:4538

約数の個数: 48

約数和(自身を含む): 194793984

約数和(自身を除く): 114263044

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 131, 140, 262, 524, 655, 917, 1310, 1834, 2620, 3668, 4391, 4585, 8782, 9170, 17564, 18340, 21955, 30737, 43910, 61474, 87820, 122948, 153685, 307370, 575221, 614740, 1150442, 2300884, 2876105, 4026547, 5752210, 8053094, 11504420, 16106188, 20132735, 40265470, 80530940]

約数ペア:

[(1, 80530940), (2, 40265470), (4, 20132735), (5, 16106188), (7, 11504420), (10, 8053094), (14, 5752210), (20, 4026547), (28, 2876105), (35, 2300884), (70, 1150442), (131, 614740), (140, 575221), (262, 307370), (524, 153685), (655, 122948), (917, 87820), (1310, 61474), (1834, 43910), (2620, 30737), (3668, 21955), (4391, 18340), (4585, 17564), (8782, 9170)]