19735660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{4861}}^1$

素因数の和:4906

約数の個数: 48

約数和(自身を含む): 49008960

約数和(自身を除く): 29273300

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 290, 406, 580, 812, 1015, 2030, 4060, 4861, 9722, 19444, 24305, 34027, 48610, 68054, 97220, 136108, 140969, 170135, 281938, 340270, 563876, 680540, 704845, 986783, 1409690, 1973566, 2819380, 3947132, 4933915, 9867830, 19735660]

約数ペア:

[(1, 19735660), (2, 9867830), (4, 4933915), (5, 3947132), (7, 2819380), (10, 1973566), (14, 1409690), (20, 986783), (28, 704845), (29, 680540), (35, 563876), (58, 340270), (70, 281938), (116, 170135), (140, 140969), (145, 136108), (203, 97220), (290, 68054), (406, 48610), (580, 34027), (812, 24305), (1015, 19444), (2030, 9722), (4060, 4861)]