638893458

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{197}}^1\times {\mathrm{3677}}^1$

素因数の和:3896

約数の個数: 72

約数和(自身を含む): 1618886412

約数和(自身を除く): 979992954

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 49, 63, 98, 126, 147, 197, 294, 394, 441, 591, 882, 1182, 1379, 1773, 2758, 3546, 3677, 4137, 7354, 8274, 9653, 11031, 12411, 19306, 22062, 24822, 25739, 28959, 33093, 51478, 57918, 66186, 77217, 86877, 154434, 173754, 180173, 231651, 360346, 463302, 540519, 724369, 1081038, 1448738, 1621557, 2173107, 3243114, 4346214, 5070583, 6519321, 10141166, 13038642, 15211749, 30423498, 35494081, 45635247, 70988162, 91270494, 106482243, 212964486, 319446729, 638893458]

約数ペア:

[(1, 638893458), (2, 319446729), (3, 212964486), (6, 106482243), (7, 91270494), (9, 70988162), (14, 45635247), (18, 35494081), (21, 30423498), (42, 15211749), (49, 13038642), (63, 10141166), (98, 6519321), (126, 5070583), (147, 4346214), (197, 3243114), (294, 2173107), (394, 1621557), (441, 1448738), (591, 1081038), (882, 724369), (1182, 540519), (1379, 463302), (1773, 360346), (2758, 231651), (3546, 180173), (3677, 173754), (4137, 154434), (7354, 86877), (8274, 77217), (9653, 66186), (11031, 57918), (12411, 51478), (19306, 33093), (22062, 28959), (24822, 25739)]