20378450

素因数分解:

$2^1\times 5^2\times {\mathrm{19}}^2\times {\mathrm{1129}}^1$

素因数の和:1179

約数の個数: 36

約数和(自身を含む): 40039290

約数和(自身を除く): 19660840

約数列:

[1, 2, 5, 10, 19, 25, 38, 50, 95, 190, 361, 475, 722, 950, 1129, 1805, 2258, 3610, 5645, 9025, 11290, 18050, 21451, 28225, 42902, 56450, 107255, 214510, 407569, 536275, 815138, 1072550, 2037845, 4075690, 10189225, 20378450]

約数ペア:

[(1, 20378450), (2, 10189225), (5, 4075690), (10, 2037845), (19, 1072550), (25, 815138), (38, 536275), (50, 407569), (95, 214510), (190, 107255), (361, 56450), (475, 42902), (722, 28225), (950, 21451), (1129, 18050), (1805, 11290), (2258, 9025), (3610, 5645)]