27580780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{401}}^1$

素因数の和:610

約数の個数: 48

約数和(自身を含む): 61457760

約数和(自身を除く): 33876980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 181, 190, 362, 380, 401, 724, 802, 905, 1604, 1810, 2005, 3439, 3620, 4010, 6878, 7619, 8020, 13756, 15238, 17195, 30476, 34390, 38095, 68780, 72581, 76190, 145162, 152380, 290324, 362905, 725810, 1379039, 1451620, 2758078, 5516156, 6895195, 13790390, 27580780]

約数ペア:

[(1, 27580780), (2, 13790390), (4, 6895195), (5, 5516156), (10, 2758078), (19, 1451620), (20, 1379039), (38, 725810), (76, 362905), (95, 290324), (181, 152380), (190, 145162), (362, 76190), (380, 72581), (401, 68780), (724, 38095), (802, 34390), (905, 30476), (1604, 17195), (1810, 15238), (2005, 13756), (3439, 8020), (3620, 7619), (4010, 6878)]