28204400

素因数分解:

$2^4\times 5^2\times 7^2\times {\mathrm{1439}}^1$

素因数の和:1471

約数の個数: 90

約数和(自身を含む): 78878880

約数和(自身を除く): 50674480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 35, 40, 49, 50, 56, 70, 80, 98, 100, 112, 140, 175, 196, 200, 245, 280, 350, 392, 400, 490, 560, 700, 784, 980, 1225, 1400, 1439, 1960, 2450, 2800, 2878, 3920, 4900, 5756, 7195, 9800, 10073, 11512, 14390, 19600, 20146, 23024, 28780, 35975, 40292, 50365, 57560, 70511, 71950, 80584, 100730, 115120, 141022, 143900, 161168, 201460, 251825, 282044, 287800, 352555, 402920, 503650, 564088, 575600, 705110, 805840, 1007300, 1128176, 1410220, 1762775, 2014600, 2820440, 3525550, 4029200, 5640880, 7051100, 14102200, 28204400]

約数ペア:

[(1, 28204400), (2, 14102200), (4, 7051100), (5, 5640880), (7, 4029200), (8, 3525550), (10, 2820440), (14, 2014600), (16, 1762775), (20, 1410220), (25, 1128176), (28, 1007300), (35, 805840), (40, 705110), (49, 575600), (50, 564088), (56, 503650), (70, 402920), (80, 352555), (98, 287800), (100, 282044), (112, 251825), (140, 201460), (175, 161168), (196, 143900), (200, 141022), (245, 115120), (280, 100730), (350, 80584), (392, 71950), (400, 70511), (490, 57560), (560, 50365), (700, 40292), (784, 35975), (980, 28780), (1225, 23024), (1400, 20146), (1439, 19600), (1960, 14390), (2450, 11512), (2800, 10073), (2878, 9800), (3920, 7195), (4900, 5756)]