19858993838

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{181}}^1\times {\mathrm{809}}^1$

素因数の和:1137

約数の個数: 64

約数和(自身を含む): 32691859200

約数和(自身を除く): 12832865362

約数列:

[1, 2, 19, 38, 43, 83, 86, 166, 181, 362, 809, 817, 1577, 1618, 1634, 3154, 3439, 3569, 6878, 7138, 7783, 15023, 15371, 15566, 30046, 30742, 34787, 67147, 67811, 69574, 134294, 135622, 146429, 147877, 285437, 292858, 295754, 570874, 645989, 660953, 1275793, 1291978, 1321906, 2551586, 2782151, 2887321, 5564302, 5774642, 6296447, 12153607, 12273791, 12592894, 24307214, 24547582, 54859099, 109718198, 119632493, 230918533, 239264986, 461837066, 522605101, 1045210202, 9929496919, 19858993838]

約数ペア:

[(1, 19858993838), (2, 9929496919), (19, 1045210202), (38, 522605101), (43, 461837066), (83, 239264986), (86, 230918533), (166, 119632493), (181, 109718198), (362, 54859099), (809, 24547582), (817, 24307214), (1577, 12592894), (1618, 12273791), (1634, 12153607), (3154, 6296447), (3439, 5774642), (3569, 5564302), (6878, 2887321), (7138, 2782151), (7783, 2551586), (15023, 1321906), (15371, 1291978), (15566, 1275793), (30046, 660953), (30742, 645989), (34787, 570874), (67147, 295754), (67811, 292858), (69574, 285437), (134294, 147877), (135622, 146429)]