27691420

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{19501}}^1$

素因数の和:19581

約数の個数: 24

約数和(自身を含む): 58974048

約数和(自身を除く): 31282628

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 19501, 39002, 78004, 97505, 195010, 390020, 1384571, 2769142, 5538284, 6922855, 13845710, 27691420]

約数ペア:

[(1, 27691420), (2, 13845710), (4, 6922855), (5, 5538284), (10, 2769142), (20, 1384571), (71, 390020), (142, 195010), (284, 97505), (355, 78004), (710, 39002), (1420, 19501)]