1388891792

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{123479}}^1$

素因数の和:123543

約数の個数: 40

約数和(自身を含む): 2909188800

約数和(自身を除く): 1520297008

約数列:

[1, 2, 4, 8, 16, 19, 37, 38, 74, 76, 148, 152, 296, 304, 592, 703, 1406, 2812, 5624, 11248, 123479, 246958, 493916, 987832, 1975664, 2346101, 4568723, 4692202, 9137446, 9384404, 18274892, 18768808, 36549784, 37537616, 73099568, 86805737, 173611474, 347222948, 694445896, 1388891792]

約数ペア:

[(1, 1388891792), (2, 694445896), (4, 347222948), (8, 173611474), (16, 86805737), (19, 73099568), (37, 37537616), (38, 36549784), (74, 18768808), (76, 18274892), (148, 9384404), (152, 9137446), (296, 4692202), (304, 4568723), (592, 2346101), (703, 1975664), (1406, 987832), (2812, 493916), (5624, 246958), (11248, 123479)]