20515673828

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{647}}^1\times {\mathrm{4451}}^1$

素因数の和:5252

約数の個数: 48

約数和(自身を含む): 39015333504

約数和(自身を除く): 18499659676

約数列:

[1, 2, 4, 13, 26, 52, 137, 274, 548, 647, 1294, 1781, 2588, 3562, 4451, 7124, 8411, 8902, 16822, 17804, 33644, 57863, 88639, 115726, 177278, 231452, 354556, 609787, 1152307, 1219574, 2304614, 2439148, 2879797, 4609228, 5759594, 7927231, 11519188, 15854462, 31708924, 37437361, 74874722, 149749444, 394532189, 789064378, 1578128756, 5128918457, 10257836914, 20515673828]

約数ペア:

[(1, 20515673828), (2, 10257836914), (4, 5128918457), (13, 1578128756), (26, 789064378), (52, 394532189), (137, 149749444), (274, 74874722), (548, 37437361), (647, 31708924), (1294, 15854462), (1781, 11519188), (2588, 7927231), (3562, 5759594), (4451, 4609228), (7124, 2879797), (8411, 2439148), (8902, 2304614), (16822, 1219574), (17804, 1152307), (33644, 609787), (57863, 354556), (88639, 231452), (115726, 177278)]