81206240

素因数分解:

$2^5\times 5^1\times {\mathrm{41}}^1\times {\mathrm{12379}}^1$

素因数の和:12435

約数の個数: 48

約数和(自身を含む): 196544880

約数和(自身を除く): 115338640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 80, 82, 160, 164, 205, 328, 410, 656, 820, 1312, 1640, 3280, 6560, 12379, 24758, 49516, 61895, 99032, 123790, 198064, 247580, 396128, 495160, 507539, 990320, 1015078, 1980640, 2030156, 2537695, 4060312, 5075390, 8120624, 10150780, 16241248, 20301560, 40603120, 81206240]

約数ペア:

[(1, 81206240), (2, 40603120), (4, 20301560), (5, 16241248), (8, 10150780), (10, 8120624), (16, 5075390), (20, 4060312), (32, 2537695), (40, 2030156), (41, 1980640), (80, 1015078), (82, 990320), (160, 507539), (164, 495160), (205, 396128), (328, 247580), (410, 198064), (656, 123790), (820, 99032), (1312, 61895), (1640, 49516), (3280, 24758), (6560, 12379)]