21784518

素因数分解:

$2^1\times 3^3\times 7^2\times {\mathrm{8233}}^1$

素因数の和:8258

約数の個数: 48

約数和(自身を含む): 56320560

約数和(自身を除く): 34536042

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 49, 54, 63, 98, 126, 147, 189, 294, 378, 441, 882, 1323, 2646, 8233, 16466, 24699, 49398, 57631, 74097, 115262, 148194, 172893, 222291, 345786, 403417, 444582, 518679, 806834, 1037358, 1210251, 1556037, 2420502, 3112074, 3630753, 7261506, 10892259, 21784518]

約数ペア:

[(1, 21784518), (2, 10892259), (3, 7261506), (6, 3630753), (7, 3112074), (9, 2420502), (14, 1556037), (18, 1210251), (21, 1037358), (27, 806834), (42, 518679), (49, 444582), (54, 403417), (63, 345786), (98, 222291), (126, 172893), (147, 148194), (189, 115262), (294, 74097), (378, 57631), (441, 49398), (882, 24699), (1323, 16466), (2646, 8233)]