20736560

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{157}}^1$

素因数の和:310

約数の個数: 80

約数和(自身を含む): 52663296

約数和(自身を除く): 31926736

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 127, 130, 157, 208, 254, 260, 314, 508, 520, 628, 635, 785, 1016, 1040, 1256, 1270, 1570, 1651, 2032, 2041, 2512, 2540, 3140, 3302, 4082, 5080, 6280, 6604, 8164, 8255, 10160, 10205, 12560, 13208, 16328, 16510, 19939, 20410, 26416, 32656, 33020, 39878, 40820, 66040, 79756, 81640, 99695, 132080, 159512, 163280, 199390, 259207, 319024, 398780, 518414, 797560, 1036828, 1296035, 1595120, 2073656, 2592070, 4147312, 5184140, 10368280, 20736560]

約数ペア:

[(1, 20736560), (2, 10368280), (4, 5184140), (5, 4147312), (8, 2592070), (10, 2073656), (13, 1595120), (16, 1296035), (20, 1036828), (26, 797560), (40, 518414), (52, 398780), (65, 319024), (80, 259207), (104, 199390), (127, 163280), (130, 159512), (157, 132080), (208, 99695), (254, 81640), (260, 79756), (314, 66040), (508, 40820), (520, 39878), (628, 33020), (635, 32656), (785, 26416), (1016, 20410), (1040, 19939), (1256, 16510), (1270, 16328), (1570, 13208), (1651, 12560), (2032, 10205), (2041, 10160), (2512, 8255), (2540, 8164), (3140, 6604), (3302, 6280), (4082, 5080)]