209930486980

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{349}}^1\times {\mathrm{733561}}^1$

素因数の和:733960

約数の個数: 48

約数和(自身を含む): 452901178800

約数和(自身を除く): 242970691820

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 349, 410, 698, 820, 1396, 1745, 3490, 6980, 14309, 28618, 57236, 71545, 143090, 286180, 733561, 1467122, 2934244, 3667805, 7335610, 14671220, 30076001, 60152002, 120304004, 150380005, 256012789, 300760010, 512025578, 601520020, 1024051156, 1280063945, 2560127890, 5120255780, 10496524349, 20993048698, 41986097396, 52482621745, 104965243490, 209930486980]

約数ペア:

[(1, 209930486980), (2, 104965243490), (4, 52482621745), (5, 41986097396), (10, 20993048698), (20, 10496524349), (41, 5120255780), (82, 2560127890), (164, 1280063945), (205, 1024051156), (349, 601520020), (410, 512025578), (698, 300760010), (820, 256012789), (1396, 150380005), (1745, 120304004), (3490, 60152002), (6980, 30076001), (14309, 14671220), (28618, 7335610), (57236, 3667805), (71545, 2934244), (143090, 1467122), (286180, 733561)]