82100720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{887}}^1$

素因数の和:1002

約数の個数: 80

約数和(自身を含む): 208111680

約数和(自身を除く): 126010960

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 89, 104, 130, 178, 208, 260, 356, 445, 520, 712, 887, 890, 1040, 1157, 1424, 1774, 1780, 2314, 3548, 3560, 4435, 4628, 5785, 7096, 7120, 8870, 9256, 11531, 11570, 14192, 17740, 18512, 23062, 23140, 35480, 46124, 46280, 57655, 70960, 78943, 92248, 92560, 115310, 157886, 184496, 230620, 315772, 394715, 461240, 631544, 789430, 922480, 1026259, 1263088, 1578860, 2052518, 3157720, 4105036, 5131295, 6315440, 8210072, 10262590, 16420144, 20525180, 41050360, 82100720]

約数ペア:

[(1, 82100720), (2, 41050360), (4, 20525180), (5, 16420144), (8, 10262590), (10, 8210072), (13, 6315440), (16, 5131295), (20, 4105036), (26, 3157720), (40, 2052518), (52, 1578860), (65, 1263088), (80, 1026259), (89, 922480), (104, 789430), (130, 631544), (178, 461240), (208, 394715), (260, 315772), (356, 230620), (445, 184496), (520, 157886), (712, 115310), (887, 92560), (890, 92248), (1040, 78943), (1157, 70960), (1424, 57655), (1774, 46280), (1780, 46124), (2314, 35480), (3548, 23140), (3560, 23062), (4435, 18512), (4628, 17740), (5785, 14192), (7096, 11570), (7120, 11531), (8870, 9256)]