27978990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71741}}^1$

素因数の和:71764

約数の個数: 32

約数和(自身を含む): 72315936

約数和(自身を除く): 44336946

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 71741, 143482, 215223, 358705, 430446, 717410, 932633, 1076115, 1865266, 2152230, 2797899, 4663165, 5595798, 9326330, 13989495, 27978990]

約数ペア:

[(1, 27978990), (2, 13989495), (3, 9326330), (5, 5595798), (6, 4663165), (10, 2797899), (13, 2152230), (15, 1865266), (26, 1076115), (30, 932633), (39, 717410), (65, 430446), (78, 358705), (130, 215223), (195, 143482), (390, 71741)]