20657664

素因数分解:

$2^9\times 3^2\times {\mathrm{4483}}^1$

素因数の和:4507

約数の個数: 60

約数和(自身を含む): 59632716

約数和(自身を除く): 38975052

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 64, 72, 96, 128, 144, 192, 256, 288, 384, 512, 576, 768, 1152, 1536, 2304, 4483, 4608, 8966, 13449, 17932, 26898, 35864, 40347, 53796, 71728, 80694, 107592, 143456, 161388, 215184, 286912, 322776, 430368, 573824, 645552, 860736, 1147648, 1291104, 1721472, 2295296, 2582208, 3442944, 5164416, 6885888, 10328832, 20657664]

約数ペア:

[(1, 20657664), (2, 10328832), (3, 6885888), (4, 5164416), (6, 3442944), (8, 2582208), (9, 2295296), (12, 1721472), (16, 1291104), (18, 1147648), (24, 860736), (32, 645552), (36, 573824), (48, 430368), (64, 322776), (72, 286912), (96, 215184), (128, 161388), (144, 143456), (192, 107592), (256, 80694), (288, 71728), (384, 53796), (512, 40347), (576, 35864), (768, 26898), (1152, 17932), (1536, 13449), (2304, 8966), (4483, 4608)]