256705720

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{167}}^1\times {\mathrm{463}}^1$

素因数の和:724

約数の個数: 64

約数和(自身を含む): 589317120

約数和(自身を除く): 332611400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 166, 167, 332, 334, 415, 463, 664, 668, 830, 835, 926, 1336, 1660, 1670, 1852, 2315, 3320, 3340, 3704, 4630, 6680, 9260, 13861, 18520, 27722, 38429, 55444, 69305, 76858, 77321, 110888, 138610, 153716, 154642, 192145, 277220, 307432, 309284, 384290, 386605, 554440, 618568, 768580, 773210, 1537160, 1546420, 3092840, 6417643, 12835286, 25670572, 32088215, 51341144, 64176430, 128352860, 256705720]

約数ペア:

[(1, 256705720), (2, 128352860), (4, 64176430), (5, 51341144), (8, 32088215), (10, 25670572), (20, 12835286), (40, 6417643), (83, 3092840), (166, 1546420), (167, 1537160), (332, 773210), (334, 768580), (415, 618568), (463, 554440), (664, 386605), (668, 384290), (830, 309284), (835, 307432), (926, 277220), (1336, 192145), (1660, 154642), (1670, 153716), (1852, 138610), (2315, 110888), (3320, 77321), (3340, 76858), (3704, 69305), (4630, 55444), (6680, 38429), (9260, 27722), (13861, 18520)]