1280650540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{397}}^1\times {\mathrm{653}}^1$

素因数の和:1091

約数の個数: 96

約数和(自身を含む): 3061033920

約数和(自身を除く): 1780383380

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 397, 494, 653, 794, 988, 1235, 1306, 1588, 1985, 2470, 2612, 3265, 3970, 4940, 5161, 6530, 7543, 7940, 8489, 10322, 12407, 13060, 15086, 16978, 20644, 24814, 25805, 30172, 33956, 37715, 42445, 49628, 51610, 62035, 75430, 84890, 98059, 103220, 124070, 150860, 161291, 169780, 196118, 248140, 259241, 322582, 392236, 490295, 518482, 645164, 806455, 980590, 1036964, 1296205, 1612910, 1961180, 2592410, 3225820, 3370133, 4925579, 5184820, 6740266, 9851158, 13480532, 16850665, 19702316, 24627895, 33701330, 49255790, 64032527, 67402660, 98511580, 128065054, 256130108, 320162635, 640325270, 1280650540]

約数ペア:

[(1, 1280650540), (2, 640325270), (4, 320162635), (5, 256130108), (10, 128065054), (13, 98511580), (19, 67402660), (20, 64032527), (26, 49255790), (38, 33701330), (52, 24627895), (65, 19702316), (76, 16850665), (95, 13480532), (130, 9851158), (190, 6740266), (247, 5184820), (260, 4925579), (380, 3370133), (397, 3225820), (494, 2592410), (653, 1961180), (794, 1612910), (988, 1296205), (1235, 1036964), (1306, 980590), (1588, 806455), (1985, 645164), (2470, 518482), (2612, 490295), (3265, 392236), (3970, 322582), (4940, 259241), (5161, 248140), (6530, 196118), (7543, 169780), (7940, 161291), (8489, 150860), (10322, 124070), (12407, 103220), (13060, 98059), (15086, 84890), (16978, 75430), (20644, 62035), (24814, 51610), (25805, 49628), (30172, 42445), (33956, 37715)]