20194993

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{397}}^1$

素因数の和:473

約数の個数: 24

約数和(自身を含む): 25637568

約数和(自身を除く): 5442575

約数列:

[1, 7, 13, 43, 91, 169, 301, 397, 559, 1183, 2779, 3913, 5161, 7267, 17071, 36127, 50869, 67093, 119497, 221923, 469651, 1553461, 2884999, 20194993]

約数ペア:

[(1, 20194993), (7, 2884999), (13, 1553461), (43, 469651), (91, 221923), (169, 119497), (301, 67093), (397, 50869), (559, 36127), (1183, 17071), (2779, 7267), (3913, 5161)]