21017712

素因数分解:

$2^4\times 3^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{599}}^1$

素因数の和:670

約数の個数: 80

約数和(自身を含む): 58924800

約数和(自身を除く): 37907088

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 17, 24, 34, 43, 48, 51, 68, 86, 102, 129, 136, 172, 204, 258, 272, 344, 408, 516, 599, 688, 731, 816, 1032, 1198, 1462, 1797, 2064, 2193, 2396, 2924, 3594, 4386, 4792, 5848, 7188, 8772, 9584, 10183, 11696, 14376, 17544, 20366, 25757, 28752, 30549, 35088, 40732, 51514, 61098, 77271, 81464, 103028, 122196, 154542, 162928, 206056, 244392, 309084, 412112, 437869, 488784, 618168, 875738, 1236336, 1313607, 1751476, 2627214, 3502952, 5254428, 7005904, 10508856, 21017712]

約数ペア:

[(1, 21017712), (2, 10508856), (3, 7005904), (4, 5254428), (6, 3502952), (8, 2627214), (12, 1751476), (16, 1313607), (17, 1236336), (24, 875738), (34, 618168), (43, 488784), (48, 437869), (51, 412112), (68, 309084), (86, 244392), (102, 206056), (129, 162928), (136, 154542), (172, 122196), (204, 103028), (258, 81464), (272, 77271), (344, 61098), (408, 51514), (516, 40732), (599, 35088), (688, 30549), (731, 28752), (816, 25757), (1032, 20366), (1198, 17544), (1462, 14376), (1797, 11696), (2064, 10183), (2193, 9584), (2396, 8772), (2924, 7188), (3594, 5848), (4386, 4792)]