68784040

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{251}}^1$

素因数の和:323

約数の個数: 128

約数和(自身を含む): 182891520

約数和(自身を除く): 114107480

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 20, 26, 31, 34, 40, 52, 62, 65, 68, 85, 104, 124, 130, 136, 155, 170, 221, 248, 251, 260, 310, 340, 403, 442, 502, 520, 527, 620, 680, 806, 884, 1004, 1054, 1105, 1240, 1255, 1612, 1768, 2008, 2015, 2108, 2210, 2510, 2635, 3224, 3263, 4030, 4216, 4267, 4420, 5020, 5270, 6526, 6851, 7781, 8060, 8534, 8840, 10040, 10540, 13052, 13702, 15562, 16120, 16315, 17068, 21080, 21335, 26104, 27404, 31124, 32630, 34136, 34255, 38905, 42670, 54808, 55471, 62248, 65260, 68510, 77810, 85340, 101153, 110942, 130520, 132277, 137020, 155620, 170680, 202306, 221884, 264554, 274040, 277355, 311240, 404612, 443768, 505765, 529108, 554710, 661385, 809224, 1011530, 1058216, 1109420, 1322770, 1719601, 2023060, 2218840, 2645540, 3439202, 4046120, 5291080, 6878404, 8598005, 13756808, 17196010, 34392020, 68784040]

約数ペア:

[(1, 68784040), (2, 34392020), (4, 17196010), (5, 13756808), (8, 8598005), (10, 6878404), (13, 5291080), (17, 4046120), (20, 3439202), (26, 2645540), (31, 2218840), (34, 2023060), (40, 1719601), (52, 1322770), (62, 1109420), (65, 1058216), (68, 1011530), (85, 809224), (104, 661385), (124, 554710), (130, 529108), (136, 505765), (155, 443768), (170, 404612), (221, 311240), (248, 277355), (251, 274040), (260, 264554), (310, 221884), (340, 202306), (403, 170680), (442, 155620), (502, 137020), (520, 132277), (527, 130520), (620, 110942), (680, 101153), (806, 85340), (884, 77810), (1004, 68510), (1054, 65260), (1105, 62248), (1240, 55471), (1255, 54808), (1612, 42670), (1768, 38905), (2008, 34255), (2015, 34136), (2108, 32630), (2210, 31124), (2510, 27404), (2635, 26104), (3224, 21335), (3263, 21080), (4030, 17068), (4216, 16315), (4267, 16120), (4420, 15562), (5020, 13702), (5270, 13052), (6526, 10540), (6851, 10040), (7781, 8840), (8060, 8534)]