21107905

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{2017}}^1$

素因数の和:2065

約数の個数: 32

約数和(自身を含む): 32546304

約数和(自身を除く): 11438399

約数列:

[1, 5, 7, 13, 23, 35, 65, 91, 115, 161, 299, 455, 805, 1495, 2017, 2093, 10085, 10465, 14119, 26221, 46391, 70595, 131105, 183547, 231955, 324737, 603083, 917735, 1623685, 3015415, 4221581, 21107905]

約数ペア:

[(1, 21107905), (5, 4221581), (7, 3015415), (13, 1623685), (23, 917735), (35, 603083), (65, 324737), (91, 231955), (115, 183547), (161, 131105), (299, 70595), (455, 46391), (805, 26221), (1495, 14119), (2017, 10465), (2093, 10085)]