28906640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{1259}}^1$

素因数の和:1320

約数の個数: 80

約数和(自身を含む): 78744960

約数和(自身を除く): 49838320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 41, 56, 70, 80, 82, 112, 140, 164, 205, 280, 287, 328, 410, 560, 574, 656, 820, 1148, 1259, 1435, 1640, 2296, 2518, 2870, 3280, 4592, 5036, 5740, 6295, 8813, 10072, 11480, 12590, 17626, 20144, 22960, 25180, 35252, 44065, 50360, 51619, 70504, 88130, 100720, 103238, 141008, 176260, 206476, 258095, 352520, 361333, 412952, 516190, 705040, 722666, 825904, 1032380, 1445332, 1806665, 2064760, 2890664, 3613330, 4129520, 5781328, 7226660, 14453320, 28906640]

約数ペア:

[(1, 28906640), (2, 14453320), (4, 7226660), (5, 5781328), (7, 4129520), (8, 3613330), (10, 2890664), (14, 2064760), (16, 1806665), (20, 1445332), (28, 1032380), (35, 825904), (40, 722666), (41, 705040), (56, 516190), (70, 412952), (80, 361333), (82, 352520), (112, 258095), (140, 206476), (164, 176260), (205, 141008), (280, 103238), (287, 100720), (328, 88130), (410, 70504), (560, 51619), (574, 50360), (656, 44065), (820, 35252), (1148, 25180), (1259, 22960), (1435, 20144), (1640, 17626), (2296, 12590), (2518, 11480), (2870, 10072), (3280, 8813), (4592, 6295), (5036, 5740)]