213561520

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{1289}}^1$

素因数の和:1430

約数の個数: 80

約数和(自身を含む): 527868000

約数和(自身を除く): 314306480

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 109, 152, 190, 218, 304, 380, 436, 545, 760, 872, 1090, 1289, 1520, 1744, 2071, 2180, 2578, 4142, 4360, 5156, 6445, 8284, 8720, 10312, 10355, 12890, 16568, 20624, 20710, 24491, 25780, 33136, 41420, 48982, 51560, 82840, 97964, 103120, 122455, 140501, 165680, 195928, 244910, 281002, 391856, 489820, 562004, 702505, 979640, 1124008, 1405010, 1959280, 2248016, 2669519, 2810020, 5339038, 5620040, 10678076, 11240080, 13347595, 21356152, 26695190, 42712304, 53390380, 106780760, 213561520]

約数ペア:

[(1, 213561520), (2, 106780760), (4, 53390380), (5, 42712304), (8, 26695190), (10, 21356152), (16, 13347595), (19, 11240080), (20, 10678076), (38, 5620040), (40, 5339038), (76, 2810020), (80, 2669519), (95, 2248016), (109, 1959280), (152, 1405010), (190, 1124008), (218, 979640), (304, 702505), (380, 562004), (436, 489820), (545, 391856), (760, 281002), (872, 244910), (1090, 195928), (1289, 165680), (1520, 140501), (1744, 122455), (2071, 103120), (2180, 97964), (2578, 82840), (4142, 51560), (4360, 48982), (5156, 41420), (6445, 33136), (8284, 25780), (8720, 24491), (10312, 20710), (10355, 20624), (12890, 16568)]