18788315

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{347}}^1$

素因数の和:396

約数の個数: 48

約数和(自身を含む): 29992032

約数和(自身を除く): 11203717

約数列:

[1, 5, 7, 13, 17, 35, 49, 65, 85, 91, 119, 221, 245, 347, 455, 595, 637, 833, 1105, 1547, 1735, 2429, 3185, 4165, 4511, 5899, 7735, 10829, 12145, 17003, 22555, 29495, 31577, 41293, 54145, 76687, 85015, 157885, 206465, 221039, 289051, 383435, 536809, 1105195, 1445255, 2684045, 3757663, 18788315]

約数ペア:

[(1, 18788315), (5, 3757663), (7, 2684045), (13, 1445255), (17, 1105195), (35, 536809), (49, 383435), (65, 289051), (85, 221039), (91, 206465), (119, 157885), (221, 85015), (245, 76687), (347, 54145), (455, 41293), (595, 31577), (637, 29495), (833, 22555), (1105, 17003), (1547, 12145), (1735, 10829), (2429, 7735), (3185, 5899), (4165, 4511)]