21970585

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{443}}^1$

素因数の和:577

約数の個数: 32

約数和(自身を含む): 32820480

約数和(自身を除く): 10849895

約数列:

[1, 5, 7, 13, 35, 65, 91, 109, 443, 455, 545, 763, 1417, 2215, 3101, 3815, 5759, 7085, 9919, 15505, 28795, 40313, 48287, 49595, 201565, 241435, 338009, 627731, 1690045, 3138655, 4394117, 21970585]

約数ペア:

[(1, 21970585), (5, 4394117), (7, 3138655), (13, 1690045), (35, 627731), (65, 338009), (91, 241435), (109, 201565), (443, 49595), (455, 48287), (545, 40313), (763, 28795), (1417, 15505), (2215, 9919), (3101, 7085), (3815, 5759)]