247980915

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{211}}^1$

素因数の和:290

約数の個数: 144

約数和(自身を含む): 554220576

約数和(自身を除く): 306239661

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 35, 39, 41, 45, 49, 63, 65, 91, 105, 117, 123, 147, 195, 205, 211, 245, 273, 287, 315, 369, 441, 455, 533, 585, 615, 633, 637, 735, 819, 861, 1055, 1365, 1435, 1477, 1599, 1845, 1899, 1911, 2009, 2205, 2583, 2665, 2743, 3165, 3185, 3731, 4095, 4305, 4431, 4797, 5733, 6027, 7385, 7995, 8229, 8651, 9495, 9555, 10045, 10339, 11193, 12915, 13293, 13715, 18081, 18655, 19201, 22155, 23985, 24687, 25953, 26117, 28665, 30135, 31017, 33579, 41145, 43255, 51695, 55965, 57603, 60557, 66465, 77859, 78351, 90405, 93051, 96005, 112463, 123435, 129765, 130585, 134407, 155085, 167895, 172809, 181671, 235053, 288015, 302785, 337389, 389295, 391755, 403221, 423899, 465255, 545013, 562315, 672035, 787241, 864045, 908355, 1012167, 1175265, 1209663, 1271697, 1686945, 2016105, 2119495, 2361723, 2725065, 3815091, 3936205, 5060835, 5510687, 6048315, 6358485, 7085169, 11808615, 16532061, 19075455, 27553435, 35425845, 49596183, 82660305, 247980915]

約数ペア:

[(1, 247980915), (3, 82660305), (5, 49596183), (7, 35425845), (9, 27553435), (13, 19075455), (15, 16532061), (21, 11808615), (35, 7085169), (39, 6358485), (41, 6048315), (45, 5510687), (49, 5060835), (63, 3936205), (65, 3815091), (91, 2725065), (105, 2361723), (117, 2119495), (123, 2016105), (147, 1686945), (195, 1271697), (205, 1209663), (211, 1175265), (245, 1012167), (273, 908355), (287, 864045), (315, 787241), (369, 672035), (441, 562315), (455, 545013), (533, 465255), (585, 423899), (615, 403221), (633, 391755), (637, 389295), (735, 337389), (819, 302785), (861, 288015), (1055, 235053), (1365, 181671), (1435, 172809), (1477, 167895), (1599, 155085), (1845, 134407), (1899, 130585), (1911, 129765), (2009, 123435), (2205, 112463), (2583, 96005), (2665, 93051), (2743, 90405), (3165, 78351), (3185, 77859), (3731, 66465), (4095, 60557), (4305, 57603), (4431, 55965), (4797, 51695), (5733, 43255), (6027, 41145), (7385, 33579), (7995, 31017), (8229, 30135), (8651, 28665), (9495, 26117), (9555, 25953), (10045, 24687), (10339, 23985), (11193, 22155), (12915, 19201), (13293, 18655), (13715, 18081)]