21073280

素因数分解:

$2^7\times 5^1\times {\mathrm{19}}^1\times {\mathrm{1733}}^1$

素因数の和:1771

約数の個数: 64

約数和(自身を含む): 53060400

約数和(自身を除く): 31987120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 128, 152, 160, 190, 304, 320, 380, 608, 640, 760, 1216, 1520, 1733, 2432, 3040, 3466, 6080, 6932, 8665, 12160, 13864, 17330, 27728, 32927, 34660, 55456, 65854, 69320, 110912, 131708, 138640, 164635, 221824, 263416, 277280, 329270, 526832, 554560, 658540, 1053664, 1109120, 1317080, 2107328, 2634160, 4214656, 5268320, 10536640, 21073280]

約数ペア:

[(1, 21073280), (2, 10536640), (4, 5268320), (5, 4214656), (8, 2634160), (10, 2107328), (16, 1317080), (19, 1109120), (20, 1053664), (32, 658540), (38, 554560), (40, 526832), (64, 329270), (76, 277280), (80, 263416), (95, 221824), (128, 164635), (152, 138640), (160, 131708), (190, 110912), (304, 69320), (320, 65854), (380, 55456), (608, 34660), (640, 32927), (760, 27728), (1216, 17330), (1520, 13864), (1733, 12160), (2432, 8665), (3040, 6932), (3466, 6080)]