20277680

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{5393}}^1$

素因数の和:5453

約数の個数: 40

約数和(自身を含む): 48157632

約数和(自身を除く): 27879952

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 188, 235, 376, 470, 752, 940, 1880, 3760, 5393, 10786, 21572, 26965, 43144, 53930, 86288, 107860, 215720, 253471, 431440, 506942, 1013884, 1267355, 2027768, 2534710, 4055536, 5069420, 10138840, 20277680]

約数ペア:

[(1, 20277680), (2, 10138840), (4, 5069420), (5, 4055536), (8, 2534710), (10, 2027768), (16, 1267355), (20, 1013884), (40, 506942), (47, 431440), (80, 253471), (94, 215720), (188, 107860), (235, 86288), (376, 53930), (470, 43144), (752, 26965), (940, 21572), (1880, 10786), (3760, 5393)]