2012720

素因数分解:

$2^4\times 5^1\times {\mathrm{139}}^1\times {\mathrm{181}}^1$

素因数の和:333

約数の個数: 40

約数和(自身を含む): 4739280

約数和(自身を除く): 2726560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 139, 181, 278, 362, 556, 695, 724, 905, 1112, 1390, 1448, 1810, 2224, 2780, 2896, 3620, 5560, 7240, 11120, 14480, 25159, 50318, 100636, 125795, 201272, 251590, 402544, 503180, 1006360, 2012720]

約数ペア:

[(1, 2012720), (2, 1006360), (4, 503180), (5, 402544), (8, 251590), (10, 201272), (16, 125795), (20, 100636), (40, 50318), (80, 25159), (139, 14480), (181, 11120), (278, 7240), (362, 5560), (556, 3620), (695, 2896), (724, 2780), (905, 2224), (1112, 1810), (1390, 1448)]