19719800

素因数分解:

$2^3\times 5^2\times {\mathrm{43}}^1\times {\mathrm{2293}}^1$

素因数の和:2352

約数の個数: 48

約数和(自身を含む): 46935240

約数和(自身を除く): 27215440

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 43, 50, 86, 100, 172, 200, 215, 344, 430, 860, 1075, 1720, 2150, 2293, 4300, 4586, 8600, 9172, 11465, 18344, 22930, 45860, 57325, 91720, 98599, 114650, 197198, 229300, 394396, 458600, 492995, 788792, 985990, 1971980, 2464975, 3943960, 4929950, 9859900, 19719800]

約数ペア:

[(1, 19719800), (2, 9859900), (4, 4929950), (5, 3943960), (8, 2464975), (10, 1971980), (20, 985990), (25, 788792), (40, 492995), (43, 458600), (50, 394396), (86, 229300), (100, 197198), (172, 114650), (200, 98599), (215, 91720), (344, 57325), (430, 45860), (860, 22930), (1075, 18344), (1720, 11465), (2150, 9172), (2293, 8600), (4300, 4586)]