21100000005

素因数分解:

$3^2\times 5^1\times 7^4\times {\mathrm{179}}^1\times {\mathrm{1091}}^1$

素因数の和:1309

約数の個数: 120

約数和(自身を含む): 42944035680

約数和(自身を除く): 21844035675

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 49, 63, 105, 147, 179, 245, 315, 343, 441, 537, 735, 895, 1029, 1091, 1253, 1611, 1715, 2205, 2401, 2685, 3087, 3273, 3759, 5145, 5455, 6265, 7203, 7637, 8055, 8771, 9819, 11277, 12005, 15435, 16365, 18795, 21609, 22911, 26313, 36015, 38185, 43855, 49095, 53459, 56385, 61397, 68733, 78939, 108045, 114555, 131565, 160377, 184191, 195289, 267295, 306985, 343665, 374213, 394695, 429779, 481131, 552573, 585867, 801885, 920955, 976445, 1122639, 1289337, 1367023, 1757601, 1871065, 2148895, 2405655, 2619491, 2762865, 2929335, 3367917, 3868011, 4101069, 5613195, 6446685, 6835115, 7858473, 8788005, 9569161, 12303207, 13097455, 16839585, 19340055, 20505345, 23575419, 28707483, 39292365, 47845805, 61516035, 66984127, 86122449, 117877095, 143537415, 200952381, 334920635, 430612245, 468888889, 602857143, 1004761905, 1406666667, 2344444445, 3014285715, 4220000001, 7033333335, 21100000005]

約数ペア:

[(1, 21100000005), (3, 7033333335), (5, 4220000001), (7, 3014285715), (9, 2344444445), (15, 1406666667), (21, 1004761905), (35, 602857143), (45, 468888889), (49, 430612245), (63, 334920635), (105, 200952381), (147, 143537415), (179, 117877095), (245, 86122449), (315, 66984127), (343, 61516035), (441, 47845805), (537, 39292365), (735, 28707483), (895, 23575419), (1029, 20505345), (1091, 19340055), (1253, 16839585), (1611, 13097455), (1715, 12303207), (2205, 9569161), (2401, 8788005), (2685, 7858473), (3087, 6835115), (3273, 6446685), (3759, 5613195), (5145, 4101069), (5455, 3868011), (6265, 3367917), (7203, 2929335), (7637, 2762865), (8055, 2619491), (8771, 2405655), (9819, 2148895), (11277, 1871065), (12005, 1757601), (15435, 1367023), (16365, 1289337), (18795, 1122639), (21609, 976445), (22911, 920955), (26313, 801885), (36015, 585867), (38185, 552573), (43855, 481131), (49095, 429779), (53459, 394695), (56385, 374213), (61397, 343665), (68733, 306985), (78939, 267295), (108045, 195289), (114555, 184191), (131565, 160377)]