21734920

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{457}}^1$

素因数の和:538

約数の個数: 64

約数和(自身を含む): 51937200

約数和(自身を除く): 30202280

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 41, 58, 82, 116, 145, 164, 205, 232, 290, 328, 410, 457, 580, 820, 914, 1160, 1189, 1640, 1828, 2285, 2378, 3656, 4570, 4756, 5945, 9140, 9512, 11890, 13253, 18280, 18737, 23780, 26506, 37474, 47560, 53012, 66265, 74948, 93685, 106024, 132530, 149896, 187370, 265060, 374740, 530120, 543373, 749480, 1086746, 2173492, 2716865, 4346984, 5433730, 10867460, 21734920]

約数ペア:

[(1, 21734920), (2, 10867460), (4, 5433730), (5, 4346984), (8, 2716865), (10, 2173492), (20, 1086746), (29, 749480), (40, 543373), (41, 530120), (58, 374740), (82, 265060), (116, 187370), (145, 149896), (164, 132530), (205, 106024), (232, 93685), (290, 74948), (328, 66265), (410, 53012), (457, 47560), (580, 37474), (820, 26506), (914, 23780), (1160, 18737), (1189, 18280), (1640, 13253), (1828, 11890), (2285, 9512), (2378, 9140), (3656, 5945), (4570, 4756)]