21455343

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1$

素因数の和:133

約数の個数: 96

約数和(自身を含む): 42771456

約数和(自身を除く): 21316113

約数列:

[1, 3, 7, 9, 13, 17, 21, 23, 39, 51, 63, 67, 69, 91, 117, 119, 153, 161, 201, 207, 221, 273, 299, 357, 391, 469, 483, 603, 663, 819, 871, 897, 1071, 1139, 1173, 1407, 1449, 1541, 1547, 1989, 2093, 2613, 2691, 2737, 3417, 3519, 4221, 4623, 4641, 5083, 6097, 6279, 7839, 7973, 8211, 10251, 10787, 13869, 13923, 14807, 15249, 18291, 18837, 20033, 23919, 24633, 26197, 32361, 35581, 44421, 45747, 54873, 60099, 71757, 78591, 97083, 103649, 106743, 133263, 140231, 180297, 183379, 235773, 310947, 320229, 340561, 420693, 550137, 932841, 1021683, 1262079, 1650411, 2383927, 3065049, 7151781, 21455343]

約数ペア:

[(1, 21455343), (3, 7151781), (7, 3065049), (9, 2383927), (13, 1650411), (17, 1262079), (21, 1021683), (23, 932841), (39, 550137), (51, 420693), (63, 340561), (67, 320229), (69, 310947), (91, 235773), (117, 183379), (119, 180297), (153, 140231), (161, 133263), (201, 106743), (207, 103649), (221, 97083), (273, 78591), (299, 71757), (357, 60099), (391, 54873), (469, 45747), (483, 44421), (603, 35581), (663, 32361), (819, 26197), (871, 24633), (897, 23919), (1071, 20033), (1139, 18837), (1173, 18291), (1407, 15249), (1449, 14807), (1541, 13923), (1547, 13869), (1989, 10787), (2093, 10251), (2613, 8211), (2691, 7973), (2737, 7839), (3417, 6279), (3519, 6097), (4221, 5083), (4623, 4641)]