20197079469

素因数分解:

$3^2\times 7^1\times {\mathrm{163}}^1\times {\mathrm{241}}^1\times {\mathrm{8161}}^1$

素因数の和:8578

約数の個数: 48

約数和(自身を含む): 33689079424

約数和(自身を除く): 13491999955

約数列:

[1, 3, 7, 9, 21, 63, 163, 241, 489, 723, 1141, 1467, 1687, 2169, 3423, 5061, 8161, 10269, 15183, 24483, 39283, 57127, 73449, 117849, 171381, 274981, 353547, 514143, 824943, 1330243, 1966801, 2474829, 3990729, 5900403, 9311701, 11972187, 13767607, 17701209, 27935103, 41302821, 83805309, 123908463, 320588563, 961765689, 2244119941, 2885297067, 6732359823, 20197079469]

約数ペア:

[(1, 20197079469), (3, 6732359823), (7, 2885297067), (9, 2244119941), (21, 961765689), (63, 320588563), (163, 123908463), (241, 83805309), (489, 41302821), (723, 27935103), (1141, 17701209), (1467, 13767607), (1687, 11972187), (2169, 9311701), (3423, 5900403), (5061, 3990729), (8161, 2474829), (10269, 1966801), (15183, 1330243), (24483, 824943), (39283, 514143), (57127, 353547), (73449, 274981), (117849, 171381)]