20278600

素因数分解:

$2^3\times 5^2\times {\mathrm{41}}^1\times {\mathrm{2473}}^1$

素因数の和:2530

約数の個数: 48

約数和(自身を含む): 48317220

約数和(自身を除く): 28038620

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 41, 50, 82, 100, 164, 200, 205, 328, 410, 820, 1025, 1640, 2050, 2473, 4100, 4946, 8200, 9892, 12365, 19784, 24730, 49460, 61825, 98920, 101393, 123650, 202786, 247300, 405572, 494600, 506965, 811144, 1013930, 2027860, 2534825, 4055720, 5069650, 10139300, 20278600]

約数ペア:

[(1, 20278600), (2, 10139300), (4, 5069650), (5, 4055720), (8, 2534825), (10, 2027860), (20, 1013930), (25, 811144), (40, 506965), (41, 494600), (50, 405572), (82, 247300), (100, 202786), (164, 123650), (200, 101393), (205, 98920), (328, 61825), (410, 49460), (820, 24730), (1025, 19784), (1640, 12365), (2050, 9892), (2473, 8200), (4100, 4946)]