20127200

素因数分解:

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

素因数の和:340

約数の個数: 72

約数和(自身を含む): 49762440

約数和(自身を除く): 29635240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 139, 160, 181, 200, 278, 362, 400, 556, 695, 724, 800, 905, 1112, 1390, 1448, 1810, 2224, 2780, 2896, 3475, 3620, 4448, 4525, 5560, 5792, 6950, 7240, 9050, 11120, 13900, 14480, 18100, 22240, 25159, 27800, 28960, 36200, 50318, 55600, 72400, 100636, 111200, 125795, 144800, 201272, 251590, 402544, 503180, 628975, 805088, 1006360, 1257950, 2012720, 2515900, 4025440, 5031800, 10063600, 20127200]

約数ペア:

[(1, 20127200), (2, 10063600), (4, 5031800), (5, 4025440), (8, 2515900), (10, 2012720), (16, 1257950), (20, 1006360), (25, 805088), (32, 628975), (40, 503180), (50, 402544), (80, 251590), (100, 201272), (139, 144800), (160, 125795), (181, 111200), (200, 100636), (278, 72400), (362, 55600), (400, 50318), (556, 36200), (695, 28960), (724, 27800), (800, 25159), (905, 22240), (1112, 18100), (1390, 14480), (1448, 13900), (1810, 11120), (2224, 9050), (2780, 7240), (2896, 6950), (3475, 5792), (3620, 5560), (4448, 4525)]