280047208

素因数分解:

$2^3\times 7^1\times {\mathrm{409}}^1\times {\mathrm{12227}}^1$

素因数の和:12649

約数の個数: 32

約数和(自身を含む): 601617600

約数和(自身を除く): 321570392

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 409, 818, 1636, 2863, 3272, 5726, 11452, 12227, 22904, 24454, 48908, 85589, 97816, 171178, 342356, 684712, 5000843, 10001686, 20003372, 35005901, 40006744, 70011802, 140023604, 280047208]

約数ペア:

[(1, 280047208), (2, 140023604), (4, 70011802), (7, 40006744), (8, 35005901), (14, 20003372), (28, 10001686), (56, 5000843), (409, 684712), (818, 342356), (1636, 171178), (2863, 97816), (3272, 85589), (5726, 48908), (11452, 24454), (12227, 22904)]