20512800938

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{137}}^1\times {\mathrm{13729}}^1$

素因数の和:13935

約数の個数: 64

約数和(自身を含む): 38197958400

約数和(自身を除く): 17685157462

約数列:

[1, 2, 7, 14, 19, 38, 41, 82, 133, 137, 266, 274, 287, 574, 779, 959, 1558, 1918, 2603, 5206, 5453, 5617, 10906, 11234, 13729, 18221, 27458, 36442, 39319, 78638, 96103, 106723, 192206, 213446, 260851, 521702, 562889, 747061, 1125778, 1494122, 1825957, 1880873, 3651914, 3761746, 3940223, 7880446, 10694891, 13166111, 21389782, 26332222, 35736587, 71473174, 74864237, 77115793, 149728474, 154231586, 250156109, 500312218, 539810551, 1079621102, 1465200067, 2930400134, 10256400469, 20512800938]

約数ペア:

[(1, 20512800938), (2, 10256400469), (7, 2930400134), (14, 1465200067), (19, 1079621102), (38, 539810551), (41, 500312218), (82, 250156109), (133, 154231586), (137, 149728474), (266, 77115793), (274, 74864237), (287, 71473174), (574, 35736587), (779, 26332222), (959, 21389782), (1558, 13166111), (1918, 10694891), (2603, 7880446), (5206, 3940223), (5453, 3761746), (5617, 3651914), (10906, 1880873), (11234, 1825957), (13729, 1494122), (18221, 1125778), (27458, 747061), (36442, 562889), (39319, 521702), (78638, 260851), (96103, 213446), (106723, 192206)]