20177884545

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{521}}^1\times {\mathrm{1669}}^1$

素因数の和:2235

約数の個数: 128

約数和(自身を含む): 42178268160

約数和(自身を除く): 22000383615

約数列:

[1, 3, 5, 7, 13, 15, 17, 21, 35, 39, 51, 65, 85, 91, 105, 119, 195, 221, 255, 273, 357, 455, 521, 595, 663, 1105, 1365, 1547, 1563, 1669, 1785, 2605, 3315, 3647, 4641, 5007, 6773, 7735, 7815, 8345, 8857, 10941, 11683, 18235, 20319, 21697, 23205, 25035, 26571, 28373, 33865, 35049, 44285, 47411, 54705, 58415, 61999, 65091, 85119, 101595, 108485, 115141, 132855, 141865, 142233, 151879, 175245, 185997, 198611, 237055, 309995, 325455, 345423, 368849, 425595, 455637, 575705, 595833, 711165, 759395, 805987, 869549, 929985, 993055, 1106547, 1727115, 1844245, 2278185, 2417961, 2581943, 2608647, 2979165, 4029935, 4347745, 5532735, 6086843, 7745829, 11304137, 12089805, 12909715, 13043235, 14782333, 18260529, 30434215, 33912411, 38729145, 44346999, 56520685, 73911665, 79128959, 91302645, 103476331, 169562055, 192170329, 221734995, 237386877, 310428993, 395644795, 517381655, 576510987, 960851645, 1186934385, 1345192303, 1552144965, 2882554935, 4035576909, 6725961515, 20177884545]

約数ペア:

[(1, 20177884545), (3, 6725961515), (5, 4035576909), (7, 2882554935), (13, 1552144965), (15, 1345192303), (17, 1186934385), (21, 960851645), (35, 576510987), (39, 517381655), (51, 395644795), (65, 310428993), (85, 237386877), (91, 221734995), (105, 192170329), (119, 169562055), (195, 103476331), (221, 91302645), (255, 79128959), (273, 73911665), (357, 56520685), (455, 44346999), (521, 38729145), (595, 33912411), (663, 30434215), (1105, 18260529), (1365, 14782333), (1547, 13043235), (1563, 12909715), (1669, 12089805), (1785, 11304137), (2605, 7745829), (3315, 6086843), (3647, 5532735), (4641, 4347745), (5007, 4029935), (6773, 2979165), (7735, 2608647), (7815, 2581943), (8345, 2417961), (8857, 2278185), (10941, 1844245), (11683, 1727115), (18235, 1106547), (20319, 993055), (21697, 929985), (23205, 869549), (25035, 805987), (26571, 759395), (28373, 711165), (33865, 595833), (35049, 575705), (44285, 455637), (47411, 425595), (54705, 368849), (58415, 345423), (61999, 325455), (65091, 309995), (85119, 237055), (101595, 198611), (108485, 185997), (115141, 175245), (132855, 151879), (141865, 142233)]