20368985

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{503}}^1$

素因数の和:617

約数の個数: 32

約数和(自身を含む): 30481920

約数和(自身を除く): 10112935

約数列:

[1, 5, 7, 13, 35, 65, 89, 91, 445, 455, 503, 623, 1157, 2515, 3115, 3521, 5785, 6539, 8099, 17605, 32695, 40495, 44767, 45773, 223835, 228865, 313369, 581971, 1566845, 2909855, 4073797, 20368985]

約数ペア:

[(1, 20368985), (5, 4073797), (7, 2909855), (13, 1566845), (35, 581971), (65, 313369), (89, 228865), (91, 223835), (445, 45773), (455, 44767), (503, 40495), (623, 32695), (1157, 17605), (2515, 8099), (3115, 6539), (3521, 5785)]