391390720

素因数分解:

$2^9\times 5^1\times 7^1\times {\mathrm{21841}}^1$

素因数の和:21871

約数の個数: 80

約数和(自身を含む): 1072529568

約数和(自身を除く): 681138848

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 256, 280, 320, 448, 512, 560, 640, 896, 1120, 1280, 1792, 2240, 2560, 3584, 4480, 8960, 17920, 21841, 43682, 87364, 109205, 152887, 174728, 218410, 305774, 349456, 436820, 611548, 698912, 764435, 873640, 1223096, 1397824, 1528870, 1747280, 2446192, 2795648, 3057740, 3494560, 4892384, 5591296, 6115480, 6989120, 9784768, 11182592, 12230960, 13978240, 19569536, 24461920, 27956480, 39139072, 48923840, 55912960, 78278144, 97847680, 195695360, 391390720]

約数ペア:

[(1, 391390720), (2, 195695360), (4, 97847680), (5, 78278144), (7, 55912960), (8, 48923840), (10, 39139072), (14, 27956480), (16, 24461920), (20, 19569536), (28, 13978240), (32, 12230960), (35, 11182592), (40, 9784768), (56, 6989120), (64, 6115480), (70, 5591296), (80, 4892384), (112, 3494560), (128, 3057740), (140, 2795648), (160, 2446192), (224, 1747280), (256, 1528870), (280, 1397824), (320, 1223096), (448, 873640), (512, 764435), (560, 698912), (640, 611548), (896, 436820), (1120, 349456), (1280, 305774), (1792, 218410), (2240, 174728), (2560, 152887), (3584, 109205), (4480, 87364), (8960, 43682), (17920, 21841)]