81707920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{2473}}^1$

素因数の和:2552

約数の個数: 80

約数和(自身を含む): 220878720

約数和(自身を除く): 139170800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 59, 70, 80, 112, 118, 140, 236, 280, 295, 413, 472, 560, 590, 826, 944, 1180, 1652, 2065, 2360, 2473, 3304, 4130, 4720, 4946, 6608, 8260, 9892, 12365, 16520, 17311, 19784, 24730, 33040, 34622, 39568, 49460, 69244, 86555, 98920, 138488, 145907, 173110, 197840, 276976, 291814, 346220, 583628, 692440, 729535, 1021349, 1167256, 1384880, 1459070, 2042698, 2334512, 2918140, 4085396, 5106745, 5836280, 8170792, 10213490, 11672560, 16341584, 20426980, 40853960, 81707920]

約数ペア:

[(1, 81707920), (2, 40853960), (4, 20426980), (5, 16341584), (7, 11672560), (8, 10213490), (10, 8170792), (14, 5836280), (16, 5106745), (20, 4085396), (28, 2918140), (35, 2334512), (40, 2042698), (56, 1459070), (59, 1384880), (70, 1167256), (80, 1021349), (112, 729535), (118, 692440), (140, 583628), (236, 346220), (280, 291814), (295, 276976), (413, 197840), (472, 173110), (560, 145907), (590, 138488), (826, 98920), (944, 86555), (1180, 69244), (1652, 49460), (2065, 39568), (2360, 34622), (2473, 33040), (3304, 24730), (4130, 19784), (4720, 17311), (4946, 16520), (6608, 12365), (8260, 9892)]