21606039

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1$

素因数の和:117

約数の個数: 96

約数和(自身を含む): 42491904

約数和(自身を除く): 20885865

約数列:

[1, 3, 7, 9, 13, 21, 23, 31, 37, 39, 63, 69, 91, 93, 111, 117, 161, 207, 217, 259, 273, 279, 299, 333, 403, 481, 483, 651, 713, 777, 819, 851, 897, 1147, 1209, 1443, 1449, 1953, 2093, 2139, 2331, 2553, 2691, 2821, 3367, 3441, 3627, 4329, 4991, 5957, 6279, 6417, 7659, 8029, 8463, 9269, 10101, 10323, 11063, 14911, 14973, 17871, 18837, 24087, 25389, 26381, 27807, 30303, 33189, 44733, 44919, 53613, 64883, 72261, 77441, 79143, 83421, 99567, 104377, 134199, 184667, 194649, 232323, 237429, 313131, 342953, 554001, 583947, 696969, 939393, 1028859, 1662003, 2400671, 3086577, 7202013, 21606039]

約数ペア:

[(1, 21606039), (3, 7202013), (7, 3086577), (9, 2400671), (13, 1662003), (21, 1028859), (23, 939393), (31, 696969), (37, 583947), (39, 554001), (63, 342953), (69, 313131), (91, 237429), (93, 232323), (111, 194649), (117, 184667), (161, 134199), (207, 104377), (217, 99567), (259, 83421), (273, 79143), (279, 77441), (299, 72261), (333, 64883), (403, 53613), (481, 44919), (483, 44733), (651, 33189), (713, 30303), (777, 27807), (819, 26381), (851, 25389), (897, 24087), (1147, 18837), (1209, 17871), (1443, 14973), (1449, 14911), (1953, 11063), (2093, 10323), (2139, 10101), (2331, 9269), (2553, 8463), (2691, 8029), (2821, 7659), (3367, 6417), (3441, 6279), (3627, 5957), (4329, 4991)]