205815876

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{541}}^1\times {\mathrm{647}}^1$

素因数の和:1209

約数の個数: 72

約数和(自身を含む): 560540736

約数和(自身を除く): 354724860

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 84, 98, 147, 196, 294, 541, 588, 647, 1082, 1294, 1623, 1941, 2164, 2588, 3246, 3787, 3882, 4529, 6492, 7574, 7764, 9058, 11361, 13587, 15148, 18116, 22722, 26509, 27174, 31703, 45444, 53018, 54348, 63406, 79527, 95109, 106036, 126812, 159054, 190218, 318108, 350027, 380436, 700054, 1050081, 1400108, 2100162, 2450189, 4200324, 4900378, 7350567, 9800756, 14701134, 17151323, 29402268, 34302646, 51453969, 68605292, 102907938, 205815876]

約数ペア:

[(1, 205815876), (2, 102907938), (3, 68605292), (4, 51453969), (6, 34302646), (7, 29402268), (12, 17151323), (14, 14701134), (21, 9800756), (28, 7350567), (42, 4900378), (49, 4200324), (84, 2450189), (98, 2100162), (147, 1400108), (196, 1050081), (294, 700054), (541, 380436), (588, 350027), (647, 318108), (1082, 190218), (1294, 159054), (1623, 126812), (1941, 106036), (2164, 95109), (2588, 79527), (3246, 63406), (3787, 54348), (3882, 53018), (4529, 45444), (6492, 31703), (7574, 27174), (7764, 26509), (9058, 22722), (11361, 18116), (13587, 15148)]