21409290

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{1999}}^1$

素因数の和:2036

約数の個数: 96

約数和(自身を含む): 67392000

約数和(自身を除く): 45982710

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 17, 18, 21, 30, 34, 35, 42, 45, 51, 63, 70, 85, 90, 102, 105, 119, 126, 153, 170, 210, 238, 255, 306, 315, 357, 510, 595, 630, 714, 765, 1071, 1190, 1530, 1785, 1999, 2142, 3570, 3998, 5355, 5997, 9995, 10710, 11994, 13993, 17991, 19990, 27986, 29985, 33983, 35982, 41979, 59970, 67966, 69965, 83958, 89955, 101949, 125937, 139930, 169915, 179910, 203898, 209895, 237881, 251874, 305847, 339830, 419790, 475762, 509745, 611694, 629685, 713643, 1019490, 1189405, 1259370, 1427286, 1529235, 2140929, 2378810, 3058470, 3568215, 4281858, 7136430, 10704645, 21409290]

約数ペア:

[(1, 21409290), (2, 10704645), (3, 7136430), (5, 4281858), (6, 3568215), (7, 3058470), (9, 2378810), (10, 2140929), (14, 1529235), (15, 1427286), (17, 1259370), (18, 1189405), (21, 1019490), (30, 713643), (34, 629685), (35, 611694), (42, 509745), (45, 475762), (51, 419790), (63, 339830), (70, 305847), (85, 251874), (90, 237881), (102, 209895), (105, 203898), (119, 179910), (126, 169915), (153, 139930), (170, 125937), (210, 101949), (238, 89955), (255, 83958), (306, 69965), (315, 67966), (357, 59970), (510, 41979), (595, 35982), (630, 33983), (714, 29985), (765, 27986), (1071, 19990), (1190, 17991), (1530, 13993), (1785, 11994), (1999, 10710), (2142, 9995), (3570, 5997), (3998, 5355)]