20765970

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{827}}^1$

素因数の和:877

約数の個数: 80

約数和(自身を含む): 57708288

約数和(自身を除く): 36942318

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 31, 45, 54, 62, 81, 90, 93, 135, 155, 162, 186, 270, 279, 310, 405, 465, 558, 810, 827, 837, 930, 1395, 1654, 1674, 2481, 2511, 2790, 4135, 4185, 4962, 5022, 7443, 8270, 8370, 12405, 12555, 14886, 22329, 24810, 25110, 25637, 37215, 44658, 51274, 66987, 74430, 76911, 111645, 128185, 133974, 153822, 223290, 230733, 256370, 334935, 384555, 461466, 669870, 692199, 769110, 1153665, 1384398, 2076597, 2307330, 3460995, 4153194, 6921990, 10382985, 20765970]

約数ペア:

[(1, 20765970), (2, 10382985), (3, 6921990), (5, 4153194), (6, 3460995), (9, 2307330), (10, 2076597), (15, 1384398), (18, 1153665), (27, 769110), (30, 692199), (31, 669870), (45, 461466), (54, 384555), (62, 334935), (81, 256370), (90, 230733), (93, 223290), (135, 153822), (155, 133974), (162, 128185), (186, 111645), (270, 76911), (279, 74430), (310, 66987), (405, 51274), (465, 44658), (558, 37215), (810, 25637), (827, 25110), (837, 24810), (930, 22329), (1395, 14886), (1654, 12555), (1674, 12405), (2481, 8370), (2511, 8270), (2790, 7443), (4135, 5022), (4185, 4962)]