1618787720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{127}}^1\times {\mathrm{491}}^1$

素因数の和:699

約数の個数: 128

約数和(自身を含む): 4080844800

約数和(自身を除く): 2462057080

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 59, 88, 110, 118, 127, 220, 236, 254, 295, 440, 472, 491, 508, 590, 635, 649, 982, 1016, 1180, 1270, 1298, 1397, 1964, 2360, 2455, 2540, 2596, 2794, 3245, 3928, 4910, 5080, 5192, 5401, 5588, 6490, 6985, 7493, 9820, 10802, 11176, 12980, 13970, 14986, 19640, 21604, 25960, 27005, 27940, 28969, 29972, 37465, 43208, 54010, 55880, 57938, 59944, 62357, 74930, 82423, 108020, 115876, 124714, 144845, 149860, 164846, 216040, 231752, 249428, 289690, 299720, 311785, 318659, 329692, 412115, 498856, 579380, 623570, 637318, 659384, 685927, 824230, 1158760, 1247140, 1274636, 1371854, 1593295, 1648460, 2494280, 2549272, 2743708, 3186590, 3296920, 3429635, 3679063, 5487416, 6373180, 6859270, 7358126, 12746360, 13718540, 14716252, 18395315, 27437080, 29432504, 36790630, 40469693, 73581260, 80939386, 147162520, 161878772, 202348465, 323757544, 404696930, 809393860, 1618787720]

約数ペア:

[(1, 1618787720), (2, 809393860), (4, 404696930), (5, 323757544), (8, 202348465), (10, 161878772), (11, 147162520), (20, 80939386), (22, 73581260), (40, 40469693), (44, 36790630), (55, 29432504), (59, 27437080), (88, 18395315), (110, 14716252), (118, 13718540), (127, 12746360), (220, 7358126), (236, 6859270), (254, 6373180), (295, 5487416), (440, 3679063), (472, 3429635), (491, 3296920), (508, 3186590), (590, 2743708), (635, 2549272), (649, 2494280), (982, 1648460), (1016, 1593295), (1180, 1371854), (1270, 1274636), (1298, 1247140), (1397, 1158760), (1964, 824230), (2360, 685927), (2455, 659384), (2540, 637318), (2596, 623570), (2794, 579380), (3245, 498856), (3928, 412115), (4910, 329692), (5080, 318659), (5192, 311785), (5401, 299720), (5588, 289690), (6490, 249428), (6985, 231752), (7493, 216040), (9820, 164846), (10802, 149860), (11176, 144845), (12980, 124714), (13970, 115876), (14986, 108020), (19640, 82423), (21604, 74930), (25960, 62357), (27005, 59944), (27940, 57938), (28969, 55880), (29972, 54010), (37465, 43208)]