20611955

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{509}}^1$

素因数の和:623

約数の個数: 32

約数和(自身を含む): 30844800

約数和(自身を除く): 10232845

約数列:

[1, 5, 7, 13, 35, 65, 89, 91, 445, 455, 509, 623, 1157, 2545, 3115, 3563, 5785, 6617, 8099, 17815, 33085, 40495, 45301, 46319, 226505, 231595, 317107, 588913, 1585535, 2944565, 4122391, 20611955]

約数ペア:

[(1, 20611955), (5, 4122391), (7, 2944565), (13, 1585535), (35, 588913), (65, 317107), (89, 231595), (91, 226505), (445, 46319), (455, 45301), (509, 40495), (623, 33085), (1157, 17815), (2545, 8099), (3115, 6617), (3563, 5785)]