21906738

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{37}}^2\times {\mathrm{127}}^1$

素因数の和:216

約数の個数: 72

約数和(自身を含む): 56189952

約数和(自身を除く): 34283214

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 37, 42, 63, 74, 111, 126, 127, 222, 254, 259, 333, 381, 518, 666, 762, 777, 889, 1143, 1369, 1554, 1778, 2286, 2331, 2667, 2738, 4107, 4662, 4699, 5334, 8001, 8214, 9398, 9583, 12321, 14097, 16002, 19166, 24642, 28194, 28749, 32893, 42291, 57498, 65786, 84582, 86247, 98679, 172494, 173863, 197358, 296037, 347726, 521589, 592074, 1043178, 1217041, 1564767, 2434082, 3129534, 3651123, 7302246, 10953369, 21906738]

約数ペア:

[(1, 21906738), (2, 10953369), (3, 7302246), (6, 3651123), (7, 3129534), (9, 2434082), (14, 1564767), (18, 1217041), (21, 1043178), (37, 592074), (42, 521589), (63, 347726), (74, 296037), (111, 197358), (126, 173863), (127, 172494), (222, 98679), (254, 86247), (259, 84582), (333, 65786), (381, 57498), (518, 42291), (666, 32893), (762, 28749), (777, 28194), (889, 24642), (1143, 19166), (1369, 16002), (1554, 14097), (1778, 12321), (2286, 9583), (2331, 9398), (2667, 8214), (2738, 8001), (4107, 5334), (4662, 4699)]