28045640

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{349}}^1$

素因数の和:415

約数の個数: 96

約数和(自身を含む): 75411000

約数和(自身を除く): 47365360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 41, 49, 56, 70, 82, 98, 140, 164, 196, 205, 245, 280, 287, 328, 349, 392, 410, 490, 574, 698, 820, 980, 1148, 1396, 1435, 1640, 1745, 1960, 2009, 2296, 2443, 2792, 2870, 3490, 4018, 4886, 5740, 6980, 8036, 9772, 10045, 11480, 12215, 13960, 14309, 16072, 17101, 19544, 20090, 24430, 28618, 34202, 40180, 48860, 57236, 68404, 71545, 80360, 85505, 97720, 100163, 114472, 136808, 143090, 171010, 200326, 286180, 342020, 400652, 500815, 572360, 684040, 701141, 801304, 1001630, 1402282, 2003260, 2804564, 3505705, 4006520, 5609128, 7011410, 14022820, 28045640]

約数ペア:

[(1, 28045640), (2, 14022820), (4, 7011410), (5, 5609128), (7, 4006520), (8, 3505705), (10, 2804564), (14, 2003260), (20, 1402282), (28, 1001630), (35, 801304), (40, 701141), (41, 684040), (49, 572360), (56, 500815), (70, 400652), (82, 342020), (98, 286180), (140, 200326), (164, 171010), (196, 143090), (205, 136808), (245, 114472), (280, 100163), (287, 97720), (328, 85505), (349, 80360), (392, 71545), (410, 68404), (490, 57236), (574, 48860), (698, 40180), (820, 34202), (980, 28618), (1148, 24430), (1396, 20090), (1435, 19544), (1640, 17101), (1745, 16072), (1960, 14309), (2009, 13960), (2296, 12215), (2443, 11480), (2792, 10045), (2870, 9772), (3490, 8036), (4018, 6980), (4886, 5740)]