257898980

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{181619}}^1$

素因数の和:181699

約数の個数: 24

約数和(自身を含む): 549218880

約数和(自身を除く): 291319900

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 181619, 363238, 726476, 908095, 1816190, 3632380, 12894949, 25789898, 51579796, 64474745, 128949490, 257898980]

約数ペア:

[(1, 257898980), (2, 128949490), (4, 64474745), (5, 51579796), (10, 25789898), (20, 12894949), (71, 3632380), (142, 1816190), (284, 908095), (355, 726476), (710, 363238), (1420, 181619)]