161314640

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{87671}}^1$

素因数の和:87707

約数の個数: 40

約数和(自身を含む): 391367808

約数和(自身を除く): 230053168

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 460, 920, 1840, 87671, 175342, 350684, 438355, 701368, 876710, 1402736, 1753420, 2016433, 3506840, 4032866, 7013680, 8065732, 10082165, 16131464, 20164330, 32262928, 40328660, 80657320, 161314640]

約数ペア:

[(1, 161314640), (2, 80657320), (4, 40328660), (5, 32262928), (8, 20164330), (10, 16131464), (16, 10082165), (20, 8065732), (23, 7013680), (40, 4032866), (46, 3506840), (80, 2016433), (92, 1753420), (115, 1402736), (184, 876710), (230, 701368), (368, 438355), (460, 350684), (920, 175342), (1840, 87671)]