19849445

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{109}}^1$

素因数の和:186

約数の個数: 48

約数和(自身を含む): 30898560

約数和(自身を除く): 11049115

約数列:

[1, 5, 7, 11, 35, 43, 55, 77, 109, 121, 215, 301, 385, 473, 545, 605, 763, 847, 1199, 1505, 2365, 3311, 3815, 4235, 4687, 5203, 5995, 8393, 13189, 16555, 23435, 26015, 32809, 36421, 41965, 51557, 65945, 92323, 164045, 182105, 257785, 360899, 461615, 567127, 1804495, 2835635, 3969889, 19849445]

約数ペア:

[(1, 19849445), (5, 3969889), (7, 2835635), (11, 1804495), (35, 567127), (43, 461615), (55, 360899), (77, 257785), (109, 182105), (121, 164045), (215, 92323), (301, 65945), (385, 51557), (473, 41965), (545, 36421), (605, 32809), (763, 26015), (847, 23435), (1199, 16555), (1505, 13189), (2365, 8393), (3311, 5995), (3815, 5203), (4235, 4687)]