1279742480

素因数分解:

$2^4\times 5^1\times {\mathrm{1291}}^1\times {\mathrm{12391}}^1$

素因数の和:13695

約数の個数: 40

約数和(自身を含む): 2977946304

約数和(自身を除く): 1698203824

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1291, 2582, 5164, 6455, 10328, 12391, 12910, 20656, 24782, 25820, 49564, 51640, 61955, 99128, 103280, 123910, 198256, 247820, 495640, 991280, 15996781, 31993562, 63987124, 79983905, 127974248, 159967810, 255948496, 319935620, 639871240, 1279742480]

約数ペア:

[(1, 1279742480), (2, 639871240), (4, 319935620), (5, 255948496), (8, 159967810), (10, 127974248), (16, 79983905), (20, 63987124), (40, 31993562), (80, 15996781), (1291, 991280), (2582, 495640), (5164, 247820), (6455, 198256), (10328, 123910), (12391, 103280), (12910, 99128), (20656, 61955), (24782, 51640), (25820, 49564)]