20951840

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1439}}^1$

素因数の和:1474

約数の個数: 96

約数和(自身を含む): 60963840

約数和(自身を除く): 40012000

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 52, 56, 65, 70, 80, 91, 104, 112, 130, 140, 160, 182, 208, 224, 260, 280, 364, 416, 455, 520, 560, 728, 910, 1040, 1120, 1439, 1456, 1820, 2080, 2878, 2912, 3640, 5756, 7195, 7280, 10073, 11512, 14390, 14560, 18707, 20146, 23024, 28780, 37414, 40292, 46048, 50365, 57560, 74828, 80584, 93535, 100730, 115120, 130949, 149656, 161168, 187070, 201460, 230240, 261898, 299312, 322336, 374140, 402920, 523796, 598624, 654745, 748280, 805840, 1047592, 1309490, 1496560, 1611680, 2095184, 2618980, 2993120, 4190368, 5237960, 10475920, 20951840]

約数ペア:

[(1, 20951840), (2, 10475920), (4, 5237960), (5, 4190368), (7, 2993120), (8, 2618980), (10, 2095184), (13, 1611680), (14, 1496560), (16, 1309490), (20, 1047592), (26, 805840), (28, 748280), (32, 654745), (35, 598624), (40, 523796), (52, 402920), (56, 374140), (65, 322336), (70, 299312), (80, 261898), (91, 230240), (104, 201460), (112, 187070), (130, 161168), (140, 149656), (160, 130949), (182, 115120), (208, 100730), (224, 93535), (260, 80584), (280, 74828), (364, 57560), (416, 50365), (455, 46048), (520, 40292), (560, 37414), (728, 28780), (910, 23024), (1040, 20146), (1120, 18707), (1439, 14560), (1456, 14390), (1820, 11512), (2080, 10073), (2878, 7280), (2912, 7195), (3640, 5756)]