81312720

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{338803}}^1$

素因数の和:338819

約数の個数: 40

約数和(自身を含む): 252070176

約数和(自身を除く): 170757456

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 338803, 677606, 1016409, 1355212, 1694015, 2032818, 2710424, 3388030, 4065636, 5082045, 5420848, 6776060, 8131272, 10164090, 13552120, 16262544, 20328180, 27104240, 40656360, 81312720]

約数ペア:

[(1, 81312720), (2, 40656360), (3, 27104240), (4, 20328180), (5, 16262544), (6, 13552120), (8, 10164090), (10, 8131272), (12, 6776060), (15, 5420848), (16, 5082045), (20, 4065636), (24, 3388030), (30, 2710424), (40, 2032818), (48, 1694015), (60, 1355212), (80, 1016409), (120, 677606), (240, 338803)]