217433565

素因数分解:

$3^4\times 5^1\times {\mathrm{257}}^1\times {\mathrm{2089}}^1$

素因数の和:2363

約数の個数: 40

約数和(自身を含む): 391473720

約数和(自身を除く): 174040155

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 257, 405, 771, 1285, 2089, 2313, 3855, 6267, 6939, 10445, 11565, 18801, 20817, 31335, 34695, 56403, 94005, 104085, 169209, 282015, 536873, 846045, 1610619, 2684365, 4831857, 8053095, 14495571, 24159285, 43486713, 72477855, 217433565]

約数ペア:

[(1, 217433565), (3, 72477855), (5, 43486713), (9, 24159285), (15, 14495571), (27, 8053095), (45, 4831857), (81, 2684365), (135, 1610619), (257, 846045), (405, 536873), (771, 282015), (1285, 169209), (2089, 104085), (2313, 94005), (3855, 56403), (6267, 34695), (6939, 31335), (10445, 20817), (11565, 18801)]