215529020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{21683}}^1$

素因数の和:21770

約数の個数: 48

約数和(自身を含む): 524579328

約数和(自身を除く): 309050308

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2485, 4970, 9940, 21683, 43366, 86732, 108415, 151781, 216830, 303562, 433660, 607124, 758905, 1517810, 1539493, 3035620, 3078986, 6157972, 7697465, 10776451, 15394930, 21552902, 30789860, 43105804, 53882255, 107764510, 215529020]

約数ペア:

[(1, 215529020), (2, 107764510), (4, 53882255), (5, 43105804), (7, 30789860), (10, 21552902), (14, 15394930), (20, 10776451), (28, 7697465), (35, 6157972), (70, 3078986), (71, 3035620), (140, 1539493), (142, 1517810), (284, 758905), (355, 607124), (497, 433660), (710, 303562), (994, 216830), (1420, 151781), (1988, 108415), (2485, 86732), (4970, 43366), (9940, 21683)]