19996892

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{211}}^1$

素因数の和:306

約数の個数: 48

約数和(自身を含む): 39177600

約数和(自身を除く): 19180708

約数列:

[1, 2, 4, 19, 29, 38, 43, 58, 76, 86, 116, 172, 211, 422, 551, 817, 844, 1102, 1247, 1634, 2204, 2494, 3268, 4009, 4988, 6119, 8018, 9073, 12238, 16036, 18146, 23693, 24476, 36292, 47386, 94772, 116261, 172387, 232522, 263117, 344774, 465044, 526234, 689548, 1052468, 4999223, 9998446, 19996892]

約数ペア:

[(1, 19996892), (2, 9998446), (4, 4999223), (19, 1052468), (29, 689548), (38, 526234), (43, 465044), (58, 344774), (76, 263117), (86, 232522), (116, 172387), (172, 116261), (211, 94772), (422, 47386), (551, 36292), (817, 24476), (844, 23693), (1102, 18146), (1247, 16036), (1634, 12238), (2204, 9073), (2494, 8018), (3268, 6119), (4009, 4988)]