18878860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1$

素因数の和:104

約数の個数: 192

約数和(自身を含む): 56899584

約数和(自身を除く): 38020724

約数列:

[1, 2, 4, 5, 7, 10, 11, 13, 14, 20, 22, 23, 26, 28, 35, 41, 44, 46, 52, 55, 65, 70, 77, 82, 91, 92, 110, 115, 130, 140, 143, 154, 161, 164, 182, 205, 220, 230, 253, 260, 286, 287, 299, 308, 322, 364, 385, 410, 451, 455, 460, 506, 533, 572, 574, 598, 644, 715, 770, 805, 820, 902, 910, 943, 1001, 1012, 1066, 1148, 1196, 1265, 1430, 1435, 1495, 1540, 1610, 1771, 1804, 1820, 1886, 2002, 2093, 2132, 2255, 2530, 2665, 2860, 2870, 2990, 3157, 3220, 3289, 3542, 3731, 3772, 4004, 4186, 4510, 4715, 5005, 5060, 5330, 5740, 5863, 5980, 6314, 6578, 6601, 7084, 7462, 8372, 8855, 9020, 9430, 10010, 10373, 10465, 10660, 11726, 12259, 12628, 13156, 13202, 14924, 15785, 16445, 17710, 18655, 18860, 20020, 20746, 20930, 23023, 23452, 24518, 26404, 29315, 31570, 32890, 33005, 35420, 37310, 41041, 41492, 41860, 46046, 49036, 51865, 58630, 61295, 63140, 65780, 66010, 72611, 74620, 82082, 85813, 92092, 103730, 115115, 117260, 122590, 132020, 134849, 145222, 164164, 171626, 205205, 207460, 230230, 245180, 269698, 290444, 343252, 363055, 410410, 429065, 460460, 539396, 674245, 726110, 820820, 858130, 943943, 1348490, 1452220, 1716260, 1887886, 2696980, 3775772, 4719715, 9439430, 18878860]

約数ペア:

[(1, 18878860), (2, 9439430), (4, 4719715), (5, 3775772), (7, 2696980), (10, 1887886), (11, 1716260), (13, 1452220), (14, 1348490), (20, 943943), (22, 858130), (23, 820820), (26, 726110), (28, 674245), (35, 539396), (41, 460460), (44, 429065), (46, 410410), (52, 363055), (55, 343252), (65, 290444), (70, 269698), (77, 245180), (82, 230230), (91, 207460), (92, 205205), (110, 171626), (115, 164164), (130, 145222), (140, 134849), (143, 132020), (154, 122590), (161, 117260), (164, 115115), (182, 103730), (205, 92092), (220, 85813), (230, 82082), (253, 74620), (260, 72611), (286, 66010), (287, 65780), (299, 63140), (308, 61295), (322, 58630), (364, 51865), (385, 49036), (410, 46046), (451, 41860), (455, 41492), (460, 41041), (506, 37310), (533, 35420), (572, 33005), (574, 32890), (598, 31570), (644, 29315), (715, 26404), (770, 24518), (805, 23452), (820, 23023), (902, 20930), (910, 20746), (943, 20020), (1001, 18860), (1012, 18655), (1066, 17710), (1148, 16445), (1196, 15785), (1265, 14924), (1430, 13202), (1435, 13156), (1495, 12628), (1540, 12259), (1610, 11726), (1771, 10660), (1804, 10465), (1820, 10373), (1886, 10010), (2002, 9430), (2093, 9020), (2132, 8855), (2255, 8372), (2530, 7462), (2665, 7084), (2860, 6601), (2870, 6578), (2990, 6314), (3157, 5980), (3220, 5863), (3289, 5740), (3542, 5330), (3731, 5060), (3772, 5005), (4004, 4715), (4186, 4510)]