19887834239

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{163}}^1\times {\mathrm{31181}}^1$

素因数の和:31407

約数の個数: 32

約数和(自身を含む): 25201042944

約数和(自身を除く): 5313208705

約数列:

[1, 7, 13, 43, 91, 163, 301, 559, 1141, 2119, 3913, 7009, 14833, 31181, 49063, 91117, 218267, 405353, 637819, 1340783, 2837471, 5082503, 9385481, 17430179, 35577521, 66072539, 122011253, 218547629, 462507773, 1529833403, 2841119177, 19887834239]

約数ペア:

[(1, 19887834239), (7, 2841119177), (13, 1529833403), (43, 462507773), (91, 218547629), (163, 122011253), (301, 66072539), (559, 35577521), (1141, 17430179), (2119, 9385481), (3913, 5082503), (7009, 2837471), (14833, 1340783), (31181, 637819), (49063, 405353), (91117, 218267)]