21168315

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{67}}^1$

素因数の和:161

約数の個数: 96

約数和(自身を含む): 45826560

約数和(自身を除く): 24658245

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 35, 45, 51, 59, 63, 67, 85, 105, 119, 153, 177, 201, 255, 295, 315, 335, 357, 413, 469, 531, 595, 603, 765, 885, 1003, 1005, 1071, 1139, 1239, 1407, 1785, 2065, 2345, 2655, 3009, 3015, 3417, 3717, 3953, 4221, 5015, 5355, 5695, 6195, 7021, 7035, 7973, 9027, 10251, 11859, 15045, 17085, 18585, 19765, 21063, 21105, 23919, 27671, 35105, 35577, 39865, 45135, 51255, 59295, 63189, 67201, 71757, 83013, 105315, 119595, 138355, 177885, 201603, 249039, 315945, 336005, 358785, 415065, 470407, 604809, 1008015, 1245195, 1411221, 2352035, 3024045, 4233663, 7056105, 21168315]

約数ペア:

[(1, 21168315), (3, 7056105), (5, 4233663), (7, 3024045), (9, 2352035), (15, 1411221), (17, 1245195), (21, 1008015), (35, 604809), (45, 470407), (51, 415065), (59, 358785), (63, 336005), (67, 315945), (85, 249039), (105, 201603), (119, 177885), (153, 138355), (177, 119595), (201, 105315), (255, 83013), (295, 71757), (315, 67201), (335, 63189), (357, 59295), (413, 51255), (469, 45135), (531, 39865), (595, 35577), (603, 35105), (765, 27671), (885, 23919), (1003, 21105), (1005, 21063), (1071, 19765), (1139, 18585), (1239, 17085), (1407, 15045), (1785, 11859), (2065, 10251), (2345, 9027), (2655, 7973), (3009, 7035), (3015, 7021), (3417, 6195), (3717, 5695), (3953, 5355), (4221, 5015)]