864457940

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^2\times {\mathrm{41}}^1\times {\mathrm{1097}}^1$

素因数の和:1209

約数の個数: 72

約数和(自身を含む): 1923313896

約数和(自身を除く): 1058855956

約数列:

[1, 2, 4, 5, 10, 20, 31, 41, 62, 82, 124, 155, 164, 205, 310, 410, 620, 820, 961, 1097, 1271, 1922, 2194, 2542, 3844, 4388, 4805, 5084, 5485, 6355, 9610, 10970, 12710, 19220, 21940, 25420, 34007, 39401, 44977, 68014, 78802, 89954, 136028, 157604, 170035, 179908, 197005, 224885, 340070, 394010, 449770, 680140, 788020, 899540, 1054217, 1394287, 2108434, 2788574, 4216868, 5271085, 5577148, 6971435, 10542170, 13942870, 21084340, 27885740, 43222897, 86445794, 172891588, 216114485, 432228970, 864457940]

約数ペア:

[(1, 864457940), (2, 432228970), (4, 216114485), (5, 172891588), (10, 86445794), (20, 43222897), (31, 27885740), (41, 21084340), (62, 13942870), (82, 10542170), (124, 6971435), (155, 5577148), (164, 5271085), (205, 4216868), (310, 2788574), (410, 2108434), (620, 1394287), (820, 1054217), (961, 899540), (1097, 788020), (1271, 680140), (1922, 449770), (2194, 394010), (2542, 340070), (3844, 224885), (4388, 197005), (4805, 179908), (5084, 170035), (5485, 157604), (6355, 136028), (9610, 89954), (10970, 78802), (12710, 68014), (19220, 44977), (21940, 39401), (25420, 34007)]