205121511

素因数分解:

$3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{239}}^2$

素因数の和:513

約数の個数: 48

約数和(自身を含む): 367110400

約数和(自身を除く): 161988889

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 133, 171, 189, 239, 399, 513, 717, 1197, 1673, 2151, 3591, 4541, 5019, 6453, 13623, 15057, 31787, 40869, 45171, 57121, 95361, 122607, 171363, 286083, 399847, 514089, 858249, 1085299, 1199541, 1542267, 3255897, 3598623, 7597093, 9767691, 10795869, 22791279, 29303073, 68373837, 205121511]

約数ペア:

[(1, 205121511), (3, 68373837), (7, 29303073), (9, 22791279), (19, 10795869), (21, 9767691), (27, 7597093), (57, 3598623), (63, 3255897), (133, 1542267), (171, 1199541), (189, 1085299), (239, 858249), (399, 514089), (513, 399847), (717, 286083), (1197, 171363), (1673, 122607), (2151, 95361), (3591, 57121), (4541, 45171), (5019, 40869), (6453, 31787), (13623, 15057)]