20494231600

素因数分解:

$2^4\times 5^2\times {\mathrm{389}}^1\times {\mathrm{131711}}^1$

素因数の和:132118

約数の個数: 60

約数和(自身を含む): 49364340480

約数和(自身を除く): 28870108880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 389, 400, 778, 1556, 1945, 3112, 3890, 6224, 7780, 9725, 15560, 19450, 31120, 38900, 77800, 131711, 155600, 263422, 526844, 658555, 1053688, 1317110, 2107376, 2634220, 3292775, 5268440, 6585550, 10536880, 13171100, 26342200, 51235579, 52684400, 102471158, 204942316, 256177895, 409884632, 512355790, 819769264, 1024711580, 1280889475, 2049423160, 2561778950, 4098846320, 5123557900, 10247115800, 20494231600]

約数ペア:

[(1, 20494231600), (2, 10247115800), (4, 5123557900), (5, 4098846320), (8, 2561778950), (10, 2049423160), (16, 1280889475), (20, 1024711580), (25, 819769264), (40, 512355790), (50, 409884632), (80, 256177895), (100, 204942316), (200, 102471158), (389, 52684400), (400, 51235579), (778, 26342200), (1556, 13171100), (1945, 10536880), (3112, 6585550), (3890, 5268440), (6224, 3292775), (7780, 2634220), (9725, 2107376), (15560, 1317110), (19450, 1053688), (31120, 658555), (38900, 526844), (77800, 263422), (131711, 155600)]