18979520

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{229}}^1$

素因数の和:290

約数の個数: 112

約数和(自身を含む): 53279040

約数和(自身を除く): 34299520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 37, 40, 56, 64, 70, 74, 80, 112, 140, 148, 160, 185, 224, 229, 259, 280, 296, 320, 370, 448, 458, 518, 560, 592, 740, 916, 1036, 1120, 1145, 1184, 1295, 1480, 1603, 1832, 2072, 2240, 2290, 2368, 2590, 2960, 3206, 3664, 4144, 4580, 5180, 5920, 6412, 7328, 8015, 8288, 8473, 9160, 10360, 11840, 12824, 14656, 16030, 16576, 16946, 18320, 20720, 25648, 32060, 33892, 36640, 41440, 42365, 51296, 59311, 64120, 67784, 73280, 82880, 84730, 102592, 118622, 128240, 135568, 169460, 237244, 256480, 271136, 296555, 338920, 474488, 512960, 542272, 593110, 677840, 948976, 1186220, 1355680, 1897952, 2372440, 2711360, 3795904, 4744880, 9489760, 18979520]

約数ペア:

[(1, 18979520), (2, 9489760), (4, 4744880), (5, 3795904), (7, 2711360), (8, 2372440), (10, 1897952), (14, 1355680), (16, 1186220), (20, 948976), (28, 677840), (32, 593110), (35, 542272), (37, 512960), (40, 474488), (56, 338920), (64, 296555), (70, 271136), (74, 256480), (80, 237244), (112, 169460), (140, 135568), (148, 128240), (160, 118622), (185, 102592), (224, 84730), (229, 82880), (259, 73280), (280, 67784), (296, 64120), (320, 59311), (370, 51296), (448, 42365), (458, 41440), (518, 36640), (560, 33892), (592, 32060), (740, 25648), (916, 20720), (1036, 18320), (1120, 16946), (1145, 16576), (1184, 16030), (1295, 14656), (1480, 12824), (1603, 11840), (1832, 10360), (2072, 9160), (2240, 8473), (2290, 8288), (2368, 8015), (2590, 7328), (2960, 6412), (3206, 5920), (3664, 5180), (4144, 4580)]