20804967126

素因数分解:

$2^1\times 3^4\times {\mathrm{71}}^1\times {\mathrm{1808813}}^1$

素因数の和:1808898

約数の個数: 40

約数和(自身を含む): 47275162704

約数和(自身を除く): 26470195578

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 71, 81, 142, 162, 213, 426, 639, 1278, 1917, 3834, 5751, 11502, 1808813, 3617626, 5426439, 10852878, 16279317, 32558634, 48837951, 97675902, 128425723, 146513853, 256851446, 293027706, 385277169, 770554338, 1155831507, 2311663014, 3467494521, 6934989042, 10402483563, 20804967126]

約数ペア:

[(1, 20804967126), (2, 10402483563), (3, 6934989042), (6, 3467494521), (9, 2311663014), (18, 1155831507), (27, 770554338), (54, 385277169), (71, 293027706), (81, 256851446), (142, 146513853), (162, 128425723), (213, 97675902), (426, 48837951), (639, 32558634), (1278, 16279317), (1917, 10852878), (3834, 5426439), (5751, 3617626), (11502, 1808813)]