18895870

素因数分解:

$2^1\times 5^1\times 7^4\times {\mathrm{787}}^1$

素因数の和:822

約数の個数: 40

約数和(自身を含む): 39729384

約数和(自身を除く): 20833514

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 343, 490, 686, 787, 1574, 1715, 2401, 3430, 3935, 4802, 5509, 7870, 11018, 12005, 24010, 27545, 38563, 55090, 77126, 192815, 269941, 385630, 539882, 1349705, 1889587, 2699410, 3779174, 9447935, 18895870]

約数ペア:

[(1, 18895870), (2, 9447935), (5, 3779174), (7, 2699410), (10, 1889587), (14, 1349705), (35, 539882), (49, 385630), (70, 269941), (98, 192815), (245, 77126), (343, 55090), (490, 38563), (686, 27545), (787, 24010), (1574, 12005), (1715, 11018), (2401, 7870), (3430, 5509), (3935, 4802)]