21577808

素因数分解:

$2^4\times 7^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{127}}^1$

素因数の和:220

約数の個数: 80

約数和(自身を含む): 50663424

約数和(自身を除く): 29085616

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 37, 41, 56, 74, 82, 112, 127, 148, 164, 254, 259, 287, 296, 328, 508, 518, 574, 592, 656, 889, 1016, 1036, 1148, 1517, 1778, 2032, 2072, 2296, 3034, 3556, 4144, 4592, 4699, 5207, 6068, 7112, 9398, 10414, 10619, 12136, 14224, 18796, 20828, 21238, 24272, 32893, 36449, 37592, 41656, 42476, 65786, 72898, 75184, 83312, 84952, 131572, 145796, 169904, 192659, 263144, 291592, 385318, 526288, 583184, 770636, 1348613, 1541272, 2697226, 3082544, 5394452, 10788904, 21577808]

約数ペア:

[(1, 21577808), (2, 10788904), (4, 5394452), (7, 3082544), (8, 2697226), (14, 1541272), (16, 1348613), (28, 770636), (37, 583184), (41, 526288), (56, 385318), (74, 291592), (82, 263144), (112, 192659), (127, 169904), (148, 145796), (164, 131572), (254, 84952), (259, 83312), (287, 75184), (296, 72898), (328, 65786), (508, 42476), (518, 41656), (574, 37592), (592, 36449), (656, 32893), (889, 24272), (1016, 21238), (1036, 20828), (1148, 18796), (1517, 14224), (1778, 12136), (2032, 10619), (2072, 10414), (2296, 9398), (3034, 7112), (3556, 6068), (4144, 5207), (4592, 4699)]