638964452

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1201061}}^1$

素因数の和:1201091

約数の個数: 24

約数和(自身を含む): 1345189440

約数和(自身を除く): 706224988

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 266, 532, 1201061, 2402122, 4804244, 8407427, 16814854, 22820159, 33629708, 45640318, 91280636, 159741113, 319482226, 638964452]

約数ペア:

[(1, 638964452), (2, 319482226), (4, 159741113), (7, 91280636), (14, 45640318), (19, 33629708), (28, 22820159), (38, 16814854), (76, 8407427), (133, 4804244), (266, 2402122), (532, 1201061)]