28530040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{157}}^1$

素因数の和:245

約数の個数: 128

約数和(自身を含む): 81907200

約数和(自身を除く): 53377160

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 59, 70, 77, 88, 110, 118, 140, 154, 157, 220, 236, 280, 295, 308, 314, 385, 413, 440, 472, 590, 616, 628, 649, 770, 785, 826, 1099, 1180, 1256, 1298, 1540, 1570, 1652, 1727, 2065, 2198, 2360, 2596, 3080, 3140, 3245, 3304, 3454, 4130, 4396, 4543, 5192, 5495, 6280, 6490, 6908, 8260, 8635, 8792, 9086, 9263, 10990, 12089, 12980, 13816, 16520, 17270, 18172, 18526, 21980, 22715, 24178, 25960, 34540, 36344, 37052, 43960, 45430, 46315, 48356, 60445, 64841, 69080, 74104, 90860, 92630, 96712, 101893, 120890, 129682, 181720, 185260, 203786, 241780, 259364, 324205, 370520, 407572, 483560, 509465, 518728, 648410, 713251, 815144, 1018930, 1296820, 1426502, 2037860, 2593640, 2853004, 3566255, 4075720, 5706008, 7132510, 14265020, 28530040]

約数ペア:

[(1, 28530040), (2, 14265020), (4, 7132510), (5, 5706008), (7, 4075720), (8, 3566255), (10, 2853004), (11, 2593640), (14, 2037860), (20, 1426502), (22, 1296820), (28, 1018930), (35, 815144), (40, 713251), (44, 648410), (55, 518728), (56, 509465), (59, 483560), (70, 407572), (77, 370520), (88, 324205), (110, 259364), (118, 241780), (140, 203786), (154, 185260), (157, 181720), (220, 129682), (236, 120890), (280, 101893), (295, 96712), (308, 92630), (314, 90860), (385, 74104), (413, 69080), (440, 64841), (472, 60445), (590, 48356), (616, 46315), (628, 45430), (649, 43960), (770, 37052), (785, 36344), (826, 34540), (1099, 25960), (1180, 24178), (1256, 22715), (1298, 21980), (1540, 18526), (1570, 18172), (1652, 17270), (1727, 16520), (2065, 13816), (2198, 12980), (2360, 12089), (2596, 10990), (3080, 9263), (3140, 9086), (3245, 8792), (3304, 8635), (3454, 8260), (4130, 6908), (4396, 6490), (4543, 6280), (5192, 5495)]