2640400

素因数分解:

$2^4\times 5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1$

素因数の和:89

約数の個数: 120

約数和(自身を含む): 7749504

約数和(自身を除く): 5109104

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 25, 28, 35, 40, 41, 46, 50, 56, 70, 80, 82, 92, 100, 112, 115, 140, 161, 164, 175, 184, 200, 205, 230, 280, 287, 322, 328, 350, 368, 400, 410, 460, 560, 574, 575, 644, 656, 700, 805, 820, 920, 943, 1025, 1148, 1150, 1288, 1400, 1435, 1610, 1640, 1840, 1886, 2050, 2296, 2300, 2576, 2800, 2870, 3220, 3280, 3772, 4025, 4100, 4592, 4600, 4715, 5740, 6440, 6601, 7175, 7544, 8050, 8200, 9200, 9430, 11480, 12880, 13202, 14350, 15088, 16100, 16400, 18860, 22960, 23575, 26404, 28700, 32200, 33005, 37720, 47150, 52808, 57400, 64400, 66010, 75440, 94300, 105616, 114800, 132020, 165025, 188600, 264040, 330050, 377200, 528080, 660100, 1320200, 2640400]

約数ペア:

[(1, 2640400), (2, 1320200), (4, 660100), (5, 528080), (7, 377200), (8, 330050), (10, 264040), (14, 188600), (16, 165025), (20, 132020), (23, 114800), (25, 105616), (28, 94300), (35, 75440), (40, 66010), (41, 64400), (46, 57400), (50, 52808), (56, 47150), (70, 37720), (80, 33005), (82, 32200), (92, 28700), (100, 26404), (112, 23575), (115, 22960), (140, 18860), (161, 16400), (164, 16100), (175, 15088), (184, 14350), (200, 13202), (205, 12880), (230, 11480), (280, 9430), (287, 9200), (322, 8200), (328, 8050), (350, 7544), (368, 7175), (400, 6601), (410, 6440), (460, 5740), (560, 4715), (574, 4600), (575, 4592), (644, 4100), (656, 4025), (700, 3772), (805, 3280), (820, 3220), (920, 2870), (943, 2800), (1025, 2576), (1148, 2300), (1150, 2296), (1288, 2050), (1400, 1886), (1435, 1840), (1610, 1640)]