18649780

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{40543}}^1$

素因数の和:40575

約数の個数: 24

約数和(自身を含む): 40868352

約数和(自身を除く): 22218572

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 40543, 81086, 162172, 202715, 405430, 810860, 932489, 1864978, 3729956, 4662445, 9324890, 18649780]

約数ペア:

[(1, 18649780), (2, 9324890), (4, 4662445), (5, 3729956), (10, 1864978), (20, 932489), (23, 810860), (46, 405430), (92, 202715), (115, 162172), (230, 81086), (460, 40543)]