21357280

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{19069}}^1$

素因数の和:19091

約数の個数: 48

約数和(自身を含む): 57667680

約数和(自身を除く): 36310400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 19069, 38138, 76276, 95345, 133483, 152552, 190690, 266966, 305104, 381380, 533932, 610208, 667415, 762760, 1067864, 1334830, 1525520, 2135728, 2669660, 3051040, 4271456, 5339320, 10678640, 21357280]

約数ペア:

[(1, 21357280), (2, 10678640), (4, 5339320), (5, 4271456), (7, 3051040), (8, 2669660), (10, 2135728), (14, 1525520), (16, 1334830), (20, 1067864), (28, 762760), (32, 667415), (35, 610208), (40, 533932), (56, 381380), (70, 305104), (80, 266966), (112, 190690), (140, 152552), (160, 133483), (224, 95345), (280, 76276), (560, 38138), (1120, 19069)]