64652840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{233}}^1\times {\mathrm{991}}^1$

素因数の和:1242

約数の個数: 64

約数和(自身を含む): 167132160

約数和(自身を除く): 102479320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 233, 280, 466, 932, 991, 1165, 1631, 1864, 1982, 2330, 3262, 3964, 4660, 4955, 6524, 6937, 7928, 8155, 9320, 9910, 13048, 13874, 16310, 19820, 27748, 32620, 34685, 39640, 55496, 65240, 69370, 138740, 230903, 277480, 461806, 923612, 1154515, 1616321, 1847224, 2309030, 3232642, 4618060, 6465284, 8081605, 9236120, 12930568, 16163210, 32326420, 64652840]

約数ペア:

[(1, 64652840), (2, 32326420), (4, 16163210), (5, 12930568), (7, 9236120), (8, 8081605), (10, 6465284), (14, 4618060), (20, 3232642), (28, 2309030), (35, 1847224), (40, 1616321), (56, 1154515), (70, 923612), (140, 461806), (233, 277480), (280, 230903), (466, 138740), (932, 69370), (991, 65240), (1165, 55496), (1631, 39640), (1864, 34685), (1982, 32620), (2330, 27748), (3262, 19820), (3964, 16310), (4660, 13874), (4955, 13048), (6524, 9910), (6937, 9320), (7928, 8155)]