20305760

素因数分解:

$2^5\times 5^1\times {\mathrm{179}}^1\times {\mathrm{709}}^1$

素因数の和:903

約数の個数: 48

約数和(自身を含む): 48308400

約数和(自身を除く): 28002640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 179, 358, 709, 716, 895, 1418, 1432, 1790, 2836, 2864, 3545, 3580, 5672, 5728, 7090, 7160, 11344, 14180, 14320, 22688, 28360, 28640, 56720, 113440, 126911, 253822, 507644, 634555, 1015288, 1269110, 2030576, 2538220, 4061152, 5076440, 10152880, 20305760]

約数ペア:

[(1, 20305760), (2, 10152880), (4, 5076440), (5, 4061152), (8, 2538220), (10, 2030576), (16, 1269110), (20, 1015288), (32, 634555), (40, 507644), (80, 253822), (160, 126911), (179, 113440), (358, 56720), (709, 28640), (716, 28360), (895, 22688), (1418, 14320), (1432, 14180), (1790, 11344), (2836, 7160), (2864, 7090), (3545, 5728), (3580, 5672)]