17890780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^2\times {\mathrm{89}}^1$

素因数の和:163

約数の個数: 72

約数和(自身を含む): 41806800

約数和(自身を除く): 23916020

約数列:

[1, 2, 4, 5, 10, 19, 20, 23, 38, 46, 76, 89, 92, 95, 115, 178, 190, 230, 356, 380, 437, 445, 460, 529, 874, 890, 1058, 1691, 1748, 1780, 2047, 2116, 2185, 2645, 3382, 4094, 4370, 5290, 6764, 8188, 8455, 8740, 10051, 10235, 10580, 16910, 20102, 20470, 33820, 38893, 40204, 40940, 47081, 50255, 77786, 94162, 100510, 155572, 188324, 194465, 201020, 235405, 388930, 470810, 777860, 894539, 941620, 1789078, 3578156, 4472695, 8945390, 17890780]

約数ペア:

[(1, 17890780), (2, 8945390), (4, 4472695), (5, 3578156), (10, 1789078), (19, 941620), (20, 894539), (23, 777860), (38, 470810), (46, 388930), (76, 235405), (89, 201020), (92, 194465), (95, 188324), (115, 155572), (178, 100510), (190, 94162), (230, 77786), (356, 50255), (380, 47081), (437, 40940), (445, 40204), (460, 38893), (529, 33820), (874, 20470), (890, 20102), (1058, 16910), (1691, 10580), (1748, 10235), (1780, 10051), (2047, 8740), (2116, 8455), (2185, 8188), (2645, 6764), (3382, 5290), (4094, 4370)]