25421720

素因数分解:

$2^3\times 5^1\times {\mathrm{137}}^1\times {\mathrm{4639}}^1$

素因数の和:4787

約数の個数: 32

約数和(自身を含む): 57628800

約数和(自身を除く): 32207080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 137, 274, 548, 685, 1096, 1370, 2740, 4639, 5480, 9278, 18556, 23195, 37112, 46390, 92780, 185560, 635543, 1271086, 2542172, 3177715, 5084344, 6355430, 12710860, 25421720]

約数ペア:

[(1, 25421720), (2, 12710860), (4, 6355430), (5, 5084344), (8, 3177715), (10, 2542172), (20, 1271086), (40, 635543), (137, 185560), (274, 92780), (548, 46390), (685, 37112), (1096, 23195), (1370, 18556), (2740, 9278), (4639, 5480)]