20218896568

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{439}}^1\times {\mathrm{11969}}^1$

素因数の和:12464

約数の個数: 64

約数和(自身を含む): 42029064000

約数和(自身を除く): 21810167432

約数列:

[1, 2, 4, 8, 13, 26, 37, 52, 74, 104, 148, 296, 439, 481, 878, 962, 1756, 1924, 3512, 3848, 5707, 11414, 11969, 16243, 22828, 23938, 32486, 45656, 47876, 64972, 95752, 129944, 155597, 211159, 311194, 422318, 442853, 622388, 844636, 885706, 1244776, 1689272, 1771412, 3542824, 5254391, 5757089, 10508782, 11514178, 21017564, 23028356, 42035128, 46056712, 68307083, 136614166, 194412467, 273228332, 388824934, 546456664, 777649868, 1555299736, 2527362071, 5054724142, 10109448284, 20218896568]

約数ペア:

[(1, 20218896568), (2, 10109448284), (4, 5054724142), (8, 2527362071), (13, 1555299736), (26, 777649868), (37, 546456664), (52, 388824934), (74, 273228332), (104, 194412467), (148, 136614166), (296, 68307083), (439, 46056712), (481, 42035128), (878, 23028356), (962, 21017564), (1756, 11514178), (1924, 10508782), (3512, 5757089), (3848, 5254391), (5707, 3542824), (11414, 1771412), (11969, 1689272), (16243, 1244776), (22828, 885706), (23938, 844636), (32486, 622388), (45656, 442853), (47876, 422318), (64972, 311194), (95752, 211159), (129944, 155597)]