128520378

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{43}}^1\times {\mathrm{7907}}^1$

素因数の和:7968

約数の個数: 64

約数和(自身を含む): 334033920

約数和(自身を除く): 205513542

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 43, 54, 63, 86, 126, 129, 189, 258, 301, 378, 387, 602, 774, 903, 1161, 1806, 2322, 2709, 5418, 7907, 8127, 15814, 16254, 23721, 47442, 55349, 71163, 110698, 142326, 166047, 213489, 332094, 340001, 426978, 498141, 680002, 996282, 1020003, 1494423, 2040006, 2380007, 2988846, 3060009, 4760014, 6120018, 7140021, 9180027, 14280042, 18360054, 21420063, 42840126, 64260189, 128520378]

約数ペア:

[(1, 128520378), (2, 64260189), (3, 42840126), (6, 21420063), (7, 18360054), (9, 14280042), (14, 9180027), (18, 7140021), (21, 6120018), (27, 4760014), (42, 3060009), (43, 2988846), (54, 2380007), (63, 2040006), (86, 1494423), (126, 1020003), (129, 996282), (189, 680002), (258, 498141), (301, 426978), (378, 340001), (387, 332094), (602, 213489), (774, 166047), (903, 142326), (1161, 110698), (1806, 71163), (2322, 55349), (2709, 47442), (5418, 23721), (7907, 16254), (8127, 15814)]