18534804988

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{541}}^1\times {\mathrm{64399}}^1$

素因数の和:64970

約数の個数: 48

約数和(自身を含む): 39093376000

約数和(自身を除く): 20558571012

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 266, 532, 541, 1082, 2164, 3787, 7574, 10279, 15148, 20558, 41116, 64399, 71953, 128798, 143906, 257596, 287812, 450793, 901586, 1223581, 1803172, 2447162, 4894324, 8565067, 17130134, 34260268, 34839859, 69679718, 139359436, 243879013, 487758026, 661957321, 975516052, 1323914642, 2647829284, 4633701247, 9267402494, 18534804988]

約数ペア:

[(1, 18534804988), (2, 9267402494), (4, 4633701247), (7, 2647829284), (14, 1323914642), (19, 975516052), (28, 661957321), (38, 487758026), (76, 243879013), (133, 139359436), (266, 69679718), (532, 34839859), (541, 34260268), (1082, 17130134), (2164, 8565067), (3787, 4894324), (7574, 2447162), (10279, 1803172), (15148, 1223581), (20558, 901586), (41116, 450793), (64399, 287812), (71953, 257596), (128798, 143906)]